Kologrieva, U. A., and A. I. Volkov. “Nvestigation of Methods for Processing Sludge Liming Sewage Hydrometallurgical Production of Vanadium Pentoxide”. KnE Materials Science, Vol. 6, no. 1, Dec. 2020, pp. 304–306, doi:10.18502/kms.v6i1.8095.