Zhang, J.L., W.S. Chen, H.M. Yang, M.J. Wang, X.R. Ren, and L.P. Chang. “Formation of NH3 During Temperature-Programmed and Isotherm Pyrolysis of Different Rank Coals”. Asian Journal of Chemistry 25, no. 13 (July 22, 2013): 7571–7574. Accessed November 25, 2024. https://asianpubs.org/index.php/ajchem/article/view/25_14_112.