1. V. V. Patrushev, L. P. Bulganina, N. G. Maksimova, et al., Zh. Neorg. Khim. 48(9), 1580 (2003) [Russ. J. Inorg. Chem. 48 (9), 1442 (2003)].
2. A. C. Preez and J. S. Preston, Proceedings of ISEC, Cape Town, 2002 (Cape Town, 2002), p. 896.
3. V. S. Chekushin and V. F. Borbat, Extraction of Precious Metals by Sulfides and Sulfoxides (Nauka, Moscow, 1984) [in Russian].
4. A. V. Nikolaev, V. G. Torgov, E. N. Gil’bert, et al., Izv. Sib. Otd. Akad. Nauk SSSR, Ser. Khim. Nauk, Issue 6 (14), 120 (1967).
5. V. S. Nikitina, Extended Abstract of Candidate’s Dissertation in Chemistry (INKhS AN SSSR, Moscow, 1972).