1. Mineral Raw Materials: From Subsoil to Market. Noble Metals and Diamonds. Gold, Silver, Platinoids, and Diamonds, Ed. by A. P. Stavskii (Nauchnyi Mir, Moscow, 2011) [in Russian].
2. G. L. Pashkov and Yu. S. Kononov, in Proceedings of the 4th International Internet-Symposium on Sorption and Extraction, Ed. by V. A. Avramenko (Dal’nauka, Vladivostok, 2011), p.40.
3. V. V. Lodeishchikov, Zolotodobycha 129, 7 (2009).
4. F. Habashi, J. Min. Met. 45, 1 (2009).
5. M. A. Meretukov, Tsvetn. Met., No. 12, 54 (2008).