A. Askarova, S. Bolegenova, S. Bolegenova, V. Maximov, and M. Beketayeva, “Study of nitrogenous substances formation during combustion of coal”, Rec.Contr.Phys., vol. 2017, no. 3, pp. 4–9, Sep. 2017, Accessed: Jul. 13, 2026. [Online]. Available: https://bph.kaznu.kz/index.php/zhuzhu/article/view/552