Hazarika, D, S Sarma, P Chakravarty, D J Kalita, J Goswami, and B C Deka. 2012. “Testosterone in Yak (Poephagus Grunniens L.) Bull Seminal Plasma and Its Correlation With Physical Characteristics of Semen”. The Indian Journal of Animal Sciences 82 (7). https://doi.org/10.56093/ijans.v82i7.21755.