Ongarbayev Y, Oteuli S, Tileuberdi Y, Zhang Y, Zheng F, Shi Q. Characterization of Vanadium and Sulfur Containing Compounds of Kazakhstan Petroleum Vacuum Residuum. Period. Polytech. Chem. Eng. [Internet]. 2021 Jan. 1 [cited 2024 Dec. 25];65(4):476-82. Available from: https://pp.omikk.bme.hu/ch/article/view/17629