Морозов Валерий Валентинович and Поливанская Валерия Владимировна 2022. Apatite-staffelite ore flotation efficiency improvement using two-stage slurry thickening. Ores and Metals (Rudy i metally) . 29, 4 (Jan. 2022). DOI:https://doi.org/10.47765/0869-5997-2021-10032.