Thu, Do Van, Doan Viet Binh, Le Van Ty, Le Thi Hue, and Tran Dang Khoi. “Application of Estrus Synchronization for Artificial Insemination to Improve Productivity and Quality of Beef Cattle”. Academia Journal of Biology 35, no. 1 (April 16, 2013): 110–115. Accessed November 22, 2024. https://vjs.ac.vn/index.php/vjbio/article/view/2946.