Is this page useful for you? Then, help us to keep the service working. Please have a look to our donations page ... Thanks for your help!!
Last updated December, 3 2015 760.408 documents processed, 20.499.313 references and 8.066.571 citations

Quaderni del Dipartimento di Economia, Finanza e Statistica / Università di Perugia, Dipartimento Economia

0.25

Impact Factor

0.23

5-Years IF

8

5-Years H index

[Raw data] [50 most cited papers] [50 most relevant papers] [cites used to compute IF] [Recent citations ][Frequent citing series ]
[more data in EconPapers] [trace new citations] [Missing citations? Add them now] [Incorrect content? Let us know]

Main indicators

Raw data

IF AIF IF5 DOC CDO CCU CIF CIT D2Y C2Y D5Y C5Y %SC CiY II AII
19900.08000 (%)0.05
19910.08000 (%)0.05
19920.09000 (%)0.05
19930.1000 (%)0.05
19940.11000 (%)0.05
19950.15000 (%)0.1
19960.19000 (%)0.09
19970.2000 (%)0.08
19980.21000 (%)0.12
19990.27000 (%)0.15
20000.36000 (%)0.14
20010.36000 (%)0.17
20020.37000 (%)0.18
20030.39000 (%)0.18
20040.41000 (%)0.18
20050.43202014007 (50%)0.22
20060.45727920205 (55.6%)0.19
20070.040.380.04144130.075527127110 (18.2%)10.070.17
20080.050.380.07226340.06292114137 (24.1%)10.050.17
20090.220.350.14972100.14143686399 (64.3%)0.17
20100.290.320.291082871.061831972218 (44.4%)40.40.15
20110.470.410.44181001741.743419962276 (17.6%)60.330.2
20120.460.460.4512112370.3315281373331 (6.7%)0.21
20130.470.490.2812124270.22430147120 (%)0.22
20140.250.560.23124220.182466114 (%)0.3
 
IF: Impact Factor: C2Y / D2Y
AIF: Average Impact Factor for series in RePEc in year y
IF5: Impact Factor: C5Y / D5Y
DOC: Number of documents published in year y
CDO: Cumulative number of documents published until year y
CCU: Cumulative number of citations to papers published until year y
CIF: Cumulative impact factor
CIT: Number of citations to papers published in year y
D2Y: Number of articles published in y-1 plus y-2
C2Y: Cites in y to articles published in y-1 plus y-2
D5Y: Number of articles published in y-1 until y-5
C5Y: Cites in y to articles published in y-1 until y-5
%SC: Percentage of selft citations in y to articles published in y-1 plus y-2
CiY: Cites in year y to documents published in year y
II: Immediacy Index: CiY / Documents.
AII: Average Immediacy Index for series in RePEc in year y

 

50 most cited documents in this series:

[Click on heading to sort table]

YearTitleCited
2007The Youth Experience Gap: Explaining Differences across EU Countries. (2007). . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:41/2007.

Full description at Econpapers || Download paper

32
2007Cohort, Age and Time Effects in Alcohol Consumption by Italian Households: a Double-Hurdle Approach. (2007). Aristei, Davide ; Pieroni, Luca ; Pierali, Federico . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:30/2007.

Full description at Econpapers || Download paper

17
2008Income inequality within European regions: determinants and effects on growth. (2008). Perugini, Cristiano ; Martino, Gaetano . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:52/2008.

Full description at Econpapers || Download paper

15
2011Temporary job protection and productivity growth in EU economies. (2011). Ricci, Andrea ; Damiani, Mirella . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:87/2011.

Full description at Econpapers || Download paper

11
2011Firms exporting and importing activities: is there a two-way relationship?. (2011). Franco, Chiara ; Castellani, Davide ; Aristei, David . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:99/2011.

Full description at Econpapers || Download paper

10
2008FDI, R&D and Human Capital in Central and Eastern European Countries. (2008). Perugini, Cristiano ; Signorelli, Marcello ; Pompei, Fabrizio . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:48/2008.

Full description at Econpapers || Download paper

10
2007A Double-Hurdle Approach to Modelling Tobacco Consumption in Italy. (2007). Aristei, David ; Pieroni, Luca . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:29/2007.

Full description at Econpapers || Download paper

9
2009The Timing of the School-to-Permanent Work Transition: a Comparison across Ten European Countries. (2009). Righi, Alessandra ; Sciulli, Dario . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:65/2009.

Full description at Econpapers || Download paper

9
2012Interest Rate Pass-Through in the Euro Area during the Financial Crisis: a Multivariate Regime-Switching Approach. (2012). . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:107/2012.

Full description at Econpapers || Download paper

8
2005Growth and employment: comparative performance, convergences and co-movements. (2005). . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:08/2005.

Full description at Econpapers || Download paper

8
2007Measuring the error of dynamic hedging: a Laplace transform approach. (2007). Angelini, Flavio ; Herzel, Stefano . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:33/2007.

Full description at Econpapers || Download paper

8
2010The Impact of Financial Crises on Youth Unemployment Rate. (2010). Marelli, Enrico ; Choudhry, Misbah Tanveer ; Signorelli, Marcello . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:79/2010.

Full description at Econpapers || Download paper

8
2005Employment Differences, Convergences and Similarities in Italian Provinces.. (2005). . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:07/2005.

Full description at Econpapers || Download paper

8
2007Productivity polarization across regions in Europe. (2007). Basile, Roberto . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:31/2007.

Full description at Econpapers || Download paper

8
2005Estimating the Role of Government Expenditure in Long-run Consumption.. (2005). Aristei, David ; Pieroni, Luca . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:13/2005.

Full description at Econpapers || Download paper

8
2005Construction and Simulation of the General Economic Equilibrium Model Meg-Ismea for the Italian Economy. (2005). Finizia, Antonela ; Magnani, Riccardo ; Salvioni, Cristina . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:17/2005.

Full description at Econpapers || Download paper

7
2009Determinants of Health Disparities in Italian Regions. (2009). Franzini, Luisa . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:70/2009.

Full description at Econpapers || Download paper

7
2008Employment Intensity of Growth in Italy A Note Using Regional Data. (2008). Perugini, Cristiano . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:55/2008.

Full description at Econpapers || Download paper

7
2007WAGE STRUCTURE, INEQUALITY AND SKILL-BIASED CHANGE: IS ITALY AN OUTLIER?. (2007). Ricci, Andrea ; Rustichelli, Emiliano . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:38/2007.

Full description at Econpapers || Download paper

7
2008Employment and Unemployment in the Italian Provinces. (2008). Perugini, Cristiano . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:49/2008.

Full description at Econpapers || Download paper

7
2006Unemployment, inflation and monetary policy in a dynamic New Keynesian model with hiring costs. (2006). Damiani, Mirella . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:22/2006.

Full description at Econpapers || Download paper

7
2008The willingness to pay for Renewable Energy Sources (RES): the case of Italy with different survey approaches and under different EU “climate vision”. First results.. (2008). Polinori, Paolo ; Bigerna, Simona . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:58/2008.

Full description at Econpapers || Download paper

7
2005Employment and policies in Europe: a regional perspective. (2005). . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:05/2005.

Full description at Econpapers || Download paper

6
2008Aluminium market and the macroeconomy. (2008). Pieroni, Luca . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:42/2008.

Full description at Econpapers || Download paper

6
2005Innovations and Labour Market Institutions: An Empirical Analysis of the Italian Case in the middle 90’s.. (2005). Pieroni, Luca . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:12/2005.

Full description at Econpapers || Download paper

6
2008Homogeneous, Urban Heterogeneous, or both? External Economies and Regional Manufacturing Productivity in Europe. (2008). Bracalente, Bruno ; Pompei, Fabrizio ; Perugini, Cristiano . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:51/2008.

Full description at Econpapers || Download paper

6
2005Gli incentivi agli investimenti: un’analisi dell’efficienza industriale su scala geografica regionale e sub regionale.. (2005). Bollino, Carlo Andrea . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:16/2005.

Full description at Econpapers || Download paper

6
2008Technological Change, Labour Demand and Income Distribution in European Union Countries. (2008). Perugini, Cristiano ; Pompei, Fabrizio . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:56/2008.

Full description at Econpapers || Download paper

6
2010The Effect of Foreign Investments on European Regional Productivity. (2010). . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:74/2010.

Full description at Econpapers || Download paper

6
2007Contracting Food Safety Strategies in Hybrid Governance Structures. (2007). Martino, Gaetano . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:40/2007.

Full description at Econpapers || Download paper

6
2005Il valore aggiunto su scala comunale: la Regione Umbria 2001-2003. (2005). Bollino, Carlo Andrea . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:15/2005.

Full description at Econpapers || Download paper

6
2006The Maastricht convergence criteria and economic growth in the EMU. (2006). Bukowski, Slawomir I.. In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:24/2006.

Full description at Econpapers || Download paper

6
2011The cost of sustainability on optimal portfolio choices. (2011). Nicolosi, Marco . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:84/2011.

Full description at Econpapers || Download paper

6
2005Investimenti diretti esteri e innovazione in Umbria. (2005). Pieroni, Luca . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:14/2005.

Full description at Econpapers || Download paper

6
2008Ambiente operativo ed efficienza nel settore del Trasporto Pubblico Locale in Italia. (2008). Polinori, Paolo ; Bigerna, Simona . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:59/2008.

Full description at Econpapers || Download paper

6
2010The Impact of Crises on Youth Unemployment of Russian Regions: An Empirical Analysis. (2010). Signorelli, Marcello ; Demidova, Olga . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:78/2010.

Full description at Econpapers || Download paper

6
2008Factor decomposition of cross-country income inequality with interaction effects. (2008). Bracalente, Bruno ; Perugini, Cristiano . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:54/2008.

Full description at Econpapers || Download paper

6
2007Institutional change, regional features and aggregate performance in eight EU’s transition countries. (2007). . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:37/2007.

Full description at Econpapers || Download paper

6
2010University-to-work transitions: the case of Perugia. (2010). Signorelli, Marcello . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:77/2010.

Full description at Econpapers || Download paper

5
2009Institutions and geography: Empirical test of spatial growth models for European regions. (2009). Di Vaio, Gianfranco ; BATTISTI, Michele ; Arbia, Giuseppe . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:72/2009.

Full description at Econpapers || Download paper

5
2011Foreign Investments and Productivity Evidence from European Regions. (2011). . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:83/2011.

Full description at Econpapers || Download paper

5
2007Explicit formulas for the minimal variance hedging strategy in a martingale case. (2007). Angelini, Flavio ; Herzel, Stefano . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:35/2007.

Full description at Econpapers || Download paper

4
Implied Volatilities of Caps: a Gaussian approach.. (2005). Angelini, Flavio ; Herzel, Stefano . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:09/2005.

Full description at Econpapers || Download paper

4
2013Integration and convergence in European electricity markets. (2013). Ciferri, Davide . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:114/2013.

Full description at Econpapers || Download paper

4
2008On the road to the euro zone. Currency rate stabilization: experiences of the selected EU countries. (2008). Bukowski, Slawomir . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:50/2008.

Full description at Econpapers || Download paper

4
2009Evaluating Discrete Dynamic Strategies in Affine Models. (2009). Angelini, Flavio ; Herzel, Stefano . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:71/2009.

Full description at Econpapers || Download paper

4
2010Beyond the Joneses: inter-country income comparisons and happiness. (2010). Ricca, Elena Giachin ; Castriota, Stefano . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:82/2010.

Full description at Econpapers || Download paper

3
2008The Components of Regional Disparities in Europe. (2008). Bracalente, Bruno ; Perugini, Cristiano . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:47/2008.

Full description at Econpapers || Download paper

3
2011Product variety, product quality, and evidence of Schumpeterian endogenous growth: a note. (2011). . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:93/2011.

Full description at Econpapers || Download paper

3
2007The IGARCH e®ect: Consequences on volatility forecasting and option trading. (2007). Herzel, Stefano ; NORD, Thomas . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:34/2007.

Full description at Econpapers || Download paper

3

50 most relevant documents in this series:

Papers most cited in the last two years. [Click on heading to sort table]

YearTitleCited
2007The Youth Experience Gap: Explaining Differences across EU Countries. (2007). . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:41/2007.

Full description at Econpapers || Download paper

14
2012Interest Rate Pass-Through in the Euro Area during the Financial Crisis: a Multivariate Regime-Switching Approach. (2012). . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:107/2012.

Full description at Econpapers || Download paper

8
2011Firms exporting and importing activities: is there a two-way relationship?. (2011). Franco, Chiara ; Castellani, Davide ; Aristei, David . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:99/2011.

Full description at Econpapers || Download paper

6
2011Temporary job protection and productivity growth in EU economies. (2011). Ricci, Andrea ; Damiani, Mirella . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:87/2011.

Full description at Econpapers || Download paper

5
2013Integration and convergence in European electricity markets. (2013). Ciferri, Davide . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:114/2013.

Full description at Econpapers || Download paper

4
2008Income inequality within European regions: determinants and effects on growth. (2008). Perugini, Cristiano ; Martino, Gaetano . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:52/2008.

Full description at Econpapers || Download paper

3
2011The cost of sustainability on optimal portfolio choices. (2011). Nicolosi, Marco . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:84/2011.

Full description at Econpapers || Download paper

3
2008FDI, R&D and Human Capital in Central and Eastern European Countries. (2008). Perugini, Cristiano ; Signorelli, Marcello ; Pompei, Fabrizio . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:48/2008.

Full description at Econpapers || Download paper

3
2009Institutions and geography: Empirical test of spatial growth models for European regions. (2009). Di Vaio, Gianfranco ; BATTISTI, Michele ; Arbia, Giuseppe . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:72/2009.

Full description at Econpapers || Download paper

3
2012The determinants of inward foreign direct investment in business services across european regions. (2012). . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:104/2012.

Full description at Econpapers || Download paper

2
2010Beyond the Joneses: inter-country income comparisons and happiness. (2010). Ricca, Elena Giachin ; Castriota, Stefano . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:82/2010.

Full description at Econpapers || Download paper

2
2008Can we declare military Keynesianism dead?. (2008). DAgostino, Giorgio ; Lorusso, Marco ; Pieroni, Luca . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:44/2008.

Full description at Econpapers || Download paper

2

Citing documents used to compute impact factor 6:

[Click on heading to sort table]

YearTitleSee
2014TIME VARYING LONG RUN DYNAMICS AND CONVERGENCE IN THE UK ENERGY MARKET. (2014). de Menezes, Lilian M. ; Tamvakis, Michael ; Houllier, Melanie . In: EcoMod2014. RePEc:ekd:006356:6970.

Full description at Econpapers || Download paper

[Citation Analysis]
2014Price convergence and integration in the Germany, France and Italy electricity markets. (2014). Karboul, Jihane ; Jbir, Rafik ; Charfeddine, Lanouar . In: Working Papers. RePEc:ipg:wpaper:2014-502.

Full description at Econpapers || Download paper

[Citation Analysis]
2014Smells Like Fiscal Policy? Assessing the Potential Effectiveness of the ECBs OMT Program. (2014). Hristov, Nikolay ; Wollmershauser, Timo ; Hulsewig, Oliver . In: CESifo Working Paper Series. RePEc:ces:ceswps:_4628.

Full description at Econpapers || Download paper

[Citation Analysis]
2014How do banks respond to increased funding uncertainty?. (2014). Walther, Ansgar ; Ritz, Robert A.. In: Cambridge Working Papers in Economics. RePEc:cam:camdae:1414.

Full description at Econpapers || Download paper

[Citation Analysis]
2014Analyses of the Czech Republics Current Economic Alignment with the Euro Area 2014. (2014). Kulhava, Kamila ; Saxa, Branislav ; Ambrisko, Robert ; Lesanovska, Jitka ; Pasalicova, Renata ; Solc, Jan ; Snobl, Radek ; Bruha, Jan ; Kral, Petr ; Babecky, Jan ; Soukup, Pavel ; Mateju, Jakub ; Komarkova, Zlatuse ; Kucharcukova, Oxana Babecka ; Kubicova, Ivana ; Dingova, Vilma ; Vozar, Mario ; Novotny, Filip ; Holub, Tomas ; Rusnak, Marek ; Hromadkova, Eva ; Adam, Tomas ; Ruzicka, Lubos ; Kocourek, David ; Benecka, Sona ; Komarek, Lubos ; Hajkova, Dana ; Zamazalova, Romana . In: Occasional Publications - Edited Volumes. RePEc:cnb:ocpubv:as14.

Full description at Econpapers || Download [Citation Analysis]

2014Global public spending efficiency in Tuscan municipalities.. (2014). DInverno, Giovanna ; Ravagli, Letizia ; Carosi, Laura . In: Discussion Papers. RePEc:pie:dsedps:2014/175.

Full description at Econpapers || Download paper

[Citation Analysis]

Cites in year: CiY

Recent citations received in: 2013

[Click on heading to sort table]

YearTitleSee

Recent citations received in: 2012

[Click on heading to sort table]

YearTitleSee

Recent citations received in: 2011

[Click on heading to sort table]

YearTitleSee
2011R&D Offshoring and the Productivity Growth of European Regions. (2011). Castellani, Davide ; Pieri, Fabio . In: Working Papers. RePEc:eec:wpaper:1120.

Full description at Econpapers || Download paper

[Citation Analysis]
2011The cost of sustainability on optimal portfolio choices. (2011). Nicolosi, Marco . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:84/2011.

Full description at Econpapers || Download paper

[Citation Analysis]
2011Temporary job protection and productivity growth in EU economies. (2011). Ricci, Andrea ; Damiani, Mirella . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:87/2011.

Full description at Econpapers || Download paper

[Citation Analysis]
2011Product variety, product quality, and evidence of Schumpeterian endogenous growth: a note. (2011). . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:93/2011.

Full description at Econpapers || Download paper

[Citation Analysis]
2011How to measure Corporate Social Responsibility. (2011). Stanghellini, Elena ; Grassi, Stefano ; Nicolosi, Marco . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:96/2011.

Full description at Econpapers || Download paper

[Citation Analysis]
2011Decentralised bargaining and performance related pay: new evidence from a panel of Italian firms. (2011). Ricci, Andrea ; Damiani, Mirella . In: Quaderni del Dipartimento di Economia, Finanza e Statistica. RePEc:pia:wpaper:97/2011.

Full description at Econpapers || Download paper

[Citation Analysis]

Warning!! This is still an experimental service. The results of this service should be interpreted with care, especially in research assessment exercises. The processing of documents is automatic. There still are errors and omissions in the identification of references. We are working to improve the software to increase the accuracy of the results.

Source data used to compute the impact factor of RePEc series.