SHELAR, R R, et al. “Efficacy of Pre-Insemination Treatment With GnRH for Improving Conception Rate in Repeat Breeder Cows”. The Indian Journal of Animal Reproduction, vol. 23, no. 1, Feb. 2023, pp. 69-70, https://acspublisher.com/journals/index.php/ijar/article/view/5650.