1. Kh. M. Kadiev, S. N. Khadzhiev, M. Kh. Kadieva, and M. P. Polikarpov, in Proceedings of XVIII Mendeleev Congress on General and Applied Chemistry (Moscow, 2007) [in Russian].
2. S. N. Khadzhiev, Kh. M. Kadiev, Jamshid Zarkesh Reza Hashemi, et al., in Proceedings of the 19th World Petroleum Congress (Madrid, 2008).
3. A. M. Gyul’maliev, M. A. Gyul’malieva, A. S. Maloletnev, and M. Ya. Shpirt, Khim. Tverd. Topl., No. 4, 27 (2008).
4. B. N. Kuznetsov, Catalysis Of Chemical Transformations of Coal and Biomass (Nauka, Novosibirsk, 1990) [in Russian].
5. Cotton, F.A. and Wilkinson, G., Advanced Inorganic Chemistry, New York: Wiley, 1966, part 3.