Volkov, A.I., Kologrieva, U.A., Kovalev, natoly I., Wainshtein, D.L., Chizhov, P.S. and Seregina, I.F. 2020. Physico-Chemical Foundation of Sludge Processing Hydrometallurgical Production of Vanadium Pentoxide. Investigation of Forms of Vanadium Compounds. KnE Materials Science. 6, 1 (Dec. 2020), 299–303. DOI:https://doi.org/10.18502/kms.v6i1.8094.