NAIDU, G VENKATA, and K BABU RAO. “Estrus Pattern and Conception Rate in Postpartum Lactating Ongole (Zebu) Cows”. The Indian Journal of Animal Reproduction, vol. 27, no. 1, Apr. 2023, pp. 14-17, https://acspublisher.com/journals/index.php/ijar/article/view/6581.