Ahmed, Abdalgabar Suliman Hamid, Mohmed Musa Ali Ibrahim, and Suleiman Hassan Suleiman. 2018. “Determinants Factors Affecting the Red Meat of Livestock Exports During the Period of (2004-2015), Khartoum, Sudan”. International Journal of Livestock Research 8 (7). India:304-18. http://ijlr.org/ojs_journal/index.php/ijlr/article/view/1731.