HUSSAIN, A, et al. “ROLE OF HCG IN FOLLICULAR, LUTEAL CHARACTERISTICS, SERUM PROGESTERONE AND ESTRADIOL CONCENTRATION IN BUFFALOES”. The Indian Journal of Animal Reproduction, vol. 33, no. 2, Jan. 2023, pp. 27-31, https://acspublisher.com/journals/index.php/ijar/article/view/4350.