Ø²ØºÙŠØ¨, Ù., & Ø¯Ù„ÙÙˆÙ, Ø. (2012). ØªØ£Ø«ÙŠØ± Ø§Ù„Ø§Ù‚ØªØ±Ø§Ø¶ Ø¹Ù„Ù‰ Ø§Ù„Ù‚ÙŠÙ…Ø© Ø§Ù„Ø³ÙˆÙ‚ÙŠØ© Ù„Ù„Ù…Ù†Ø´Ø£Ø©: Ø¯Ø±Ø§Ø³Ø© ØØ§Ù„Ø© Ù…Ø¬Ù…Ø¹ ØµÙŠØ¯Ø§Ù„. RESEARCH OF ECONOMIC AND MANAGERIAL, 12. Retrieved from https://revues.univ-biskra.dz/index.php/rem/article/view/1098