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First Author:
 
Juan Gabriel Brida
School of Economics and Management- Free University of Bolzano, Italy.
JuanGabriel.Brida@unibz.it
 
Universitätsplatz 1 - piazza Università, 1
Bolzano, 39100, Italy
 
+39 0471 013492(Phone)
+39 0471 013492(Fax)

Second Author:

María J. Such-devesa
Faculty of Economics and Management-University of Alcala,Spain.
mjesus.such@uah.es
 
 
 
 

Third Author:

Marta Faias
Faculty of Economics - Universidade Nova de Lisboa, Portugal
mcm@fct.unl.pt
 
 
 
 

Fourth Author:

Alberto Pinto
Department of Mathematics-Universidade do Minho, Portugal.
aapinto1@gmail.com