1. Pol’kin, S.I., Obogashchenie rud i rossypei redkikh i blagorodnykh metallov (Processing of Ores and Placers of Rare and Noble Metals), Moscow: Nedra, 1987.
2. Kienko, L.A., Samatova, L.A., Voronova, O.V., and Plyusnina, L.N., Using the Mixtures of Collectros in Flotation of Finely Disseminated Carbonate-Fluorite Ore, Obog. Rud, 2009, no. 3, pp. 25–28.
3. Kupka, N. and Rudolph, M., Froth Flotation of Scheelite—A Review, Int. J. Min. Sci. and Tech., 2018, vol. 28, no. 3, pp. 373–384.
4. Liu, Ch., Feng, Q., Zhang, G., Chen, W., and Chen, Y., Effect of Depressants in the Selective Flotation of Scheelite and Calcite Using Oxidized Paraffin Soap as Collector, Int. J. Min. Proc, 2016, vol. 157, pp. 210–215.
5. Arsent’ev, V.A., Gorlovskii, S.I., and Ustonov, N.D., Kompleksnoe deistvie flotatsionnykh reagentov (Combined Effect of Flotation Reagents), Moscow: Nedra, 1992.