Basu, A, et al. “Voluntary Feed Intake and Live Weight Gain in Yaks (Poephagus Grunniens L) Grazed on a High Altitude Grass Land”. The Indian Journal of Animal Sciences, vol. 75, no. 1, Jan. 2005, https://epubs.icar.org.in/index.php/IJAnS/article/view/9666.