B. S. YADAV and A. S. VIRK, “Role of mineral acids in fixation of ammonia during urea ammoniation of gram straw”, Indian J of Anim Sci, vol. 64, no. 8, Jun. 2013, Accessed: Oct. 24, 2025. [Online]. Available: https://epubs.icar.org.in/index.php/IJAnS/article/view/30899