PRASAD, P ESWARA, and M RAJ REDDY. “In Vitro Evaluation of Optimum Conditions for Urea-Ammonia Treatment of Sorghum Straw”. The Indian Journal of Animal Sciences, vol. 67, no. 8, Nov. 2013, https://epubs.icar.org.in/index.php/IJAnS/article/view/34925.