Ravindranatha, B.M. and Reddy, S.M. (2012) “Effect of single and double dose of PGF₂α on oestrus synchronization in purebred Holstein Friesian cows”, The Indian Journal of Animal Sciences, 69(12). Available at: https://epubs.icar.org.in/index.php/IJAnS/article/view/22017 (Accessed: 23 October 2025).