1. S. V. Zabrodskaya, D. A. Oparin, and V. D. Makhaev, Vestsi Akad. Nauk Belarusi, Ser. Biyal. Navuk, 107 (1992).
2. Zh. V. Motylevich, S. V. Zabrodskaya, V. D. Makhaev, and D. A. Oparin, Proceedings of International Symposiium “Vitamins and Health of Polulations of Belarus and Neighboring Regions,” Grodno, 1995, p. 155.
3. C. V. Zabrodskaya, Zh. V. Motylevich, V. D. Makhaev, et al., RF Patent No. 2050361, 20.12.1995, Byul. Izobret., No. 35 (1995).
4. A. S. Antsyshkina, G. G. Sadikov, and V. D. Makhaev, Russ. J. Inorg. Chem. 53, 11703 (2008).
5. Hu Ning-Hai, K. Aoki, A. O. Adeyemo, and G. N. Williams, Inorg. Chim. Acta 325, 9 (2001).