A., Mohammed O.; 						A, Murtada Kh..
 Efficiency of Selected Sudanese Sheep Markets: A Bivariate Approach  (1995-2011).
<strong>Gezira Journal of Economic and Social Sciences</strong>, [S.l.], v. 7, n. 2, jan. 2016.
ISSN 1858-6023. متوفر في: &lt;<a href="http://37.60.236.48/index.php/gjess/article/view/642" target="_new">http://37.60.236.48/index.php/gjess/article/view/642</a>&gt;. تأريخ الوصول: 29 july 2026.