Messerle, V., A. Ustimenko, A. Askarova, and A. Nagibin. “PLASMA-CHEMICAL ACTIVATION OF FLAME COMBUSTION IN THE FURNACE OF A PULVERIZED COAL FIRED BOILER”. Recent Contributions to Physics, vol. 35, no. 4, June 2011, pp. 51-56, https://bph.kaznu.kz/index.php/zhuzhu/article/view/1002.