O.A. BUSHARA, Mohamed; A.M .AZIZ, Yaaqob; I. M. HUSSAIN, Abu-Bakr. Cost efficiency of Yemen Islamic banks: An inefficiency effects approach (2002-2014). Gezira Journal of Agricultural Science, [S.l.], v. 16, n. 2, dec. 2018. ISSN 1728-9556. Available at: <http://37.60.236.48/index.php/gjas/article/view/1253>. Date accessed: 03 june 2026.