Zhambolova, A., Y. Ongarbayev, Y. Tileuberdi, and B. Teltayev. “Oxidation of Vacuum Residue With the Addition of Crumb Rubber”. Eurasian Chemico-Technological Journal 24, no. 1 (March 31, 2022): 21-32. Accessed August 8, 2022. https://ect-journal.kz/index.php/ectj/article/view/1145.