Yadav, Vinay, R. K. Chandolia, Amarjeet Bisla, Gitesh Saini, Ravi Dutt, and L. C. Ranga. “Accuracy of Real-Time B-Mode Trans-Rectal Ultrasonography for Early Pregnancy Diagnosis in Crossbred Ewes”. International Journal of Livestock Research 9, no. 10 (October 31, 2019): 170–178. Accessed April 15, 2026. http://ijlr.org/ojs_journal/index.php/ijlr/article/view/1102.