Authors: Ana Rute Cardoso, Paulo Guimarães and Klaus F. Zimmermann
Scientometrics, Vol. 84, No 3, 621--637, January, 2009
This paper originally appeared as
Barcelona School of Economics Working Paper 368
Authors: Ana Rute Cardoso, Paulo Guimarães and Klaus F. Zimmermann
Scientometrics, Vol. 84, No 3, 621--637, January, 2009© Barcelona Graduate School of Economics. All rights reserved.