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First Author:
 
Constantin Chilarescu
Laboratory CLERSE, University of Lille 1
constantin.chilarescu@univ-lille1.fr
 
Bâtiment SH2
Villeneuve d''''Ascq Cedex, 59655, France
 
 
 

Second Author:

Ciprian Sipos
Department of Economics, West University of Timisoara
ciprian.sipos@feaa.uvt.ro