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First Author:
 
Claudio Detotto
Dipartimento Economia, Impresa e Regolamentazione (DEIR) and CRENoS, University of Sassari
cdetotto@uniss.it
 
via torre tonda 34
sassari, 07100, italy
 
 
 
http://sites.google.com/site/claudiodetotto/

Second Author:

Pulina Manuela
School of Economics and Management, Fac. of Economics, Free Univ. Bolzano; CRENoS, Univ. Sassari
mpulina@uniss.it
 
sassari, 07100, italy