Ahmed, W M, and S I Shalaby. “Temporal Relationship Between Plasma Progesterone and Oxytocin Profiles in Relation to Ovarian Activity in Sheep”. The Indian Journal of Animal Sciences 68, no. 11 (July 26, 2012). Accessed October 24, 2025. https://epubs.icar.org.in/index.php/IJAnS/article/view/22429.