Y. Petrov, Ivan, Konstantin Y. Ushakov, Alexander R. Bogomolov, and Boris G. Tryasunov. “IR Spectra of Low-Metamorphosed Barzas Coal Thermally Treated in Hydrogen Medium at Various Temperatures”. International Journal of Engineering & Technology 7, no. 3.32 (August 26, 2018): 161–165. Accessed April 28, 2024. https://www.sciencepubco.com/index.php/ijet/article/view/24668.