1. Dubovikov, O.A. and Yaskelyainen, E.E., Processing Low-Grade Bauxite Minerals by the Bayer Method, Zapiski GI, 2016, vol. 221, pp. 668–674.
2. Shvartsman, B.Kh., Kislotnye metody pererabotki glinozemsoderzhashchego syr’ya (Acid Methods for Processing Alumina-Bearing Minerals), Moscow: Tsvetmetinformatsiya, 1964.
3. Sazhin, V.S., Novye gidrokhimicheskie sposoby polucheniya glinozema (New Hydrochemical Methods to Produce Alumina), Kyiv, Naukova Dumka, 1973.
4. Pustil’nik, G.L. and Pevzner, I.Z., Kislotnye sposoby pererabotki nizkokachestvennogo alyuminiisoderzhashchego syr’ya (Acid Methods for Processing Low-Grade Aluminum-Bearing Minerals), Moscow: Tsvetmetinformatsiya, 1978.
5. Sutyrin, Yu.E., O razvitii kislotnykh sposobov polucheniya glinozema: khimicheskie metody pererabotki rudnogo syr’ya (Development of Acid Methods for Producing Alumina: Chemical Methods for Processing Ore Minerals), Moscow: VIMS, 1980.