1. Piskunov, V.M. and Reznichenko, V.V., Sb. Nauch. tr. VNIItsvetmet, 2006, p. 56.
2. Sadykov, S.B., Avtoklavnaya pererabotka nizkosortnykh tsinkovykh kontsentratov (Autoclave Processing of Low-Grade Zinc Concentrates), Yekaterinburg: Ural Branch Russ. Acad. Sci., 2006.
3. Lugovitskaya, T.N., Hydrochemical Transformation of Lignosulfonates during Autoclave Leaching of Zinc Concentrates, Cand. Sci. (Eng.) Dissertation, Yekaterinburg: Ural State Tech. Univ.-Ural Polytech. Inst. (UGTU-UPI), 2009.
4. Teptereva, G.A., Bogolyuk, G.B., Kruchkova, E.S., et al., Ekolog. Sist. Pribory, 2009, no. 2, p. 50.
5. Gomolko, L.A., Shul’ga, N.I., Krut’ko, N.P., et al., Abstracts of Papers, Energoi materialosberegayushchie ekologicheski chistye tekhnologii: 6-ya Mezhdunarodnaya nauchno-tekhnicheskaya konferentsiya (Energy-Saving and Material-Saving Environmentally Pure Technologies: 6th Int. Sci.-Tech. Conf.), Grodno: Grodno State Univ., 2005, p. 151.