“The Application of Synchronization Methods Using Prostaglandin F 2,by Intra Vaginal Sponges (IVS) and Intra Muscular (IM) to Improve Reproductive Performance of Thintailed Ewe Lambs”. Animal Production: Indonesian Journal of Animal Production, vol. 9, no. 3, May 2011, https://jap.fapet.unsoed.ac.id/index.php/JAP/article/view/1168.