All Rights Reserved
AccessEcon LLC 2006, 2008.
Powered by MinhViet JSC
ralph lauren polo


First Author:
 
Pedro Macedo
CIDMA - Center for Research & Development in Mathematics and Applications, University of Aveiro
pmacedo@ua.pt
 
Department of Mathematics
, Portugal
 
 
 

Second Author:

Elvira Silva
Faculty of Economics & Center for Economics and Finance at University of Porto (CEF.UP)
esilva@fep.up.pt
 
, Portugal