ÙØ¶Ù„, Ø., Ù…Ø³Ø§Ø¹Ø¯, Ø., Ø§ØÙ…Ø¯, Ø., & ÙŠÙˆØ³Ù, Ø. 2013 Jan 1. ØªØ£Ø«ÙŠØ± Ø§Ù„Ø¹ÙˆØ§Ù…Ù„ Ø§Ù„Ø¯ÙŠÙ…ØºØ±Ø§ÙÙŠØ© ÙˆØ§Ù„ÙˆØ¸ÙŠÙÙŠØ© Ø¹Ù„Ù‰ Ø¶ØºÙˆØ· Ø§Ù„Ø¹Ù…Ù„ Ù„Ø¯Ù‰ Ø£Ø³Ø§ØªØ°Ø© Ø¬Ø§Ù…Ø¹Ø© Ø§Ù„Ø¬Ø²ÙŠØ±Ø©-Ø§Ù„Ø³ÙˆØ¯Ø§Ù† ( 2013). Gezira Journal of Economic and Social Sciences. [Online] 4:1&2