Long, Le Thanh, Doan Thi Hong Hanh, Nguyen Thi Hong Van, and Hoang Nghia Son. “Isolation and Culture of Bovine Embryonic Stem-Like Cells Using Whole Zona-Free Embryo Culture”. Academia Journal of Biology 34, no. 3se (August 6, 2012): 277–284. Accessed September 25, 2021. https://vjs.vjs.ac.vn/index.php/vjbio/article/view/1795.