Al Eknah، M. M.، و Noakes، D. E. (1987). Uterine Activity in the Ewe and Cow, with Particular Reference to its Effect on Cervical Dilatation and the Influence of Tocolytic Agents (رسالة دكتوراه غير منشورة). University of London، لندن. مسترجع من http://search.mandumah.com/Record/608528
Al Eknah، Marzook Mohammed، و D. E. Noakes. "Uterine Activity in the Ewe and Cow, With Particular Reference to Its Effect On Cervical Dilatation and the Influence of Tocolytic Agents" رسالة دكتوراه. University of London، لندن، 1987. مسترجع من http://search.mandumah.com/Record/608528