Kornmatitsuk, S., Kornmatitsuk, B., & Kitiyanant, Y. (2014). Delayed Post-ovulatory Progesterone Rise in Thai-Holstein Dairy Heifers: Association with Endocrine Events around Oestrus, Effects on Conception Rate and Possibility for Progesterone Supplement Post-insemination. The Thai Journal of Veterinary Medicine, 43(4), 503–509. Retrieved from https://he01.tci-thaijo.org/index.php/tjvm/article/view/15511