|  | 
	
		| First Author:
 
 | 
	
		|  | 
	
		| Boumediene  Souiki | 
	
		| MRE - Montpellier Recherche en Economie | 
	
		| souiki.boumediene@gmail.com | 
	
		|  | 
	
		| Site Richter, Avenue Raymond Dugrand | 
	
		| Montpellier, 34960, France | 
	
		|  | 
	
		| 0750481343(Phone) | 
	
		| 0750481343(Fax) | 
	
		|  | 
	
	
		| Second Author: 
 
 | 
	
		| Françoise  Seyte | 
	
		| MRE - Montpellier Recherche en Economie | 
	
		| francoise.seyte@umontpellier.fr | 
	
		|  | 
	
		|  | 
	
		| Site Richter, Avenue Raymond Dugrand, 34960, France | 
	
		|  | 
	
		|  | 
	
		|  | 
	
		|  | 
	
		|  |