Jureerat Sumretprasong, Anone Thuangsanthia, Narong Leangcharuen, Keerati Thijae and Sarakit Thawinprawat (2010) “Effects of Equine Chorionic Gonadotropin on Progesterone-based Estrus Synchronization in Holstein Friesian x Brahman Recipient Cows”, Agriculture and Natural Resources. Bangkok, Thailand, 44(2), pp. 196–201. available at: https://li01.tci-thaijo.org/index.php/anres/article/view/244906 (accessed: 16 April 2025).