Nataliya Halysh, Olena Borysiak, Brych Vasyl, Volodymyr Korol, Oksana Vakun, Sandeep Kumar Gupta. 2020. “Implementation of Standards for Solid Fuels”. International Journal of Advanced Science and Technology 29 (7s), 3827 -34. http://sersc.org/journals/index.php/IJAST/article/view/18753.