Cisneros de la Cueva, S., N. Balagurusamy, S.B. Pérez-Vega, I. Pérez-Reyes, J.A. Vázquez-Castillo, F.J. Zavala Díaz de la Serna, and I. Salmerón-Ochoa. “Effects of Different Nitrogen Sources on Methane Production, Free Ammonium and Hydrogen Sulfide in Anaerobic Digestion of Cheese Whey With Cow Manure”. Revista Mexicana de Ingeniería Química 20, no. 3 (October 7, 2021): Bio2566. Accessed December 1, 2021. http://www.rmiq.org/ojs311/index.php/rmiq/article/view/2566.