Ho, Thomas Chia-Tang, Tsung-Ching Liu, Cheng-Yan Li, and Jacky Peng-Wen Chan. “Predictable ovulation time and increased serum estradiol concentration achieved by GnRH administration at 56-hour proestrus in lactating dairy cows”. The Thai Journal of Veterinary Medicine 52, no. 4 (January 9, 2023): 745–752. accessed September 14, 2026. https://he01.tci-thaijo.org/index.php/tjvm/article/view/261503.