Vathsala, M., Satheshkumar, S., Subramaniam, A., Palanisamy, A., & Ramadass, P. (2007). Ultrasonographic assessment of superovulation in crossbred cows in Tamil Nadu. The Indian Journal of Animal Sciences, 77(10). https://epubs.icar.org.in/index.php/IJAnS/article/view/10309