Safarova, V., I. Galinurov, R. Khatmullina, N. Nizanutdinova, and A. Stupin. “The Development of Approaches to Objective Evaluation of Wastes Hazard Class”. Russian Journal of Applied Ecology, no. 1, Mar. 2015, pp. 64-70, https://rjae.ru/index.php/rjae/article/view/259.