Ø§Ù„Ø¨Ø´ÙŠØ±, Ø., & Ù…ØÙ…Ø¯, Ù. 2015 Jan 1. Ø£Ø³Ø¨Ø§Ø¨ Ø§Ù„ØªØÙˆÙ„ Ù…Ù† Ø³ÙŠØ§Ø³Ø© Ø§Ù„ØªÙˆØ²ÙŠØ¹ Ø§Ù„Ù…Ø¨Ø§Ø´Ø± Ø¥Ù„Ù‰ Ø§Ù„Ø¨ÙŠØ¹ Ø¹Ù† Ø·Ø±ÙŠÙ‚ Ø§Ù„ÙˆÙƒÙ„Ø§Ø¡ ÙÙŠ Ø´Ø±ÙƒØ© Ø³ÙƒØ± ÙƒÙ†Ø§Ù†Ø© Ø§Ù„Ù…ØØ¯ÙˆØ¯Ø© - Ø§Ù„Ø³ÙˆØ¯Ø§Ù†. Gezira Journal of Economic and Social Sciences. [Online] 6:2