1. Kuandykov, L.L., Bakholdin, S.I., Shul’pina, I.L., and Antonov, P.I., Izv. Ross. Akad. Nauk, Ser. Fiz., 2004, vol. 68, no. 6, p. 784.
2. Antonov, P.I., Krymov, V.M., Nosov, Yu.G., and Shul’pina, I.L., Izv. Ross. Akad. Nauk, Ser. Fiz., 2004, vol. 68, no. 6, p. 777.
3. Yuferev, V.S., Krymov, V.M., Kuandykov, L.L., Bakholdin, S.I., Nosov, Yu.G., Shulpina, I.L., and Antonov, P.I., J. Cryst. Growth, 2005, vol. 275, p. e785.
4. Krymov, V.M., et al., Izv. Ross. Akad. Nauk, Ser. Fiz., 2009, vol. 73, no. 10, p. 1355.
5. Mamedov, V.M., Yuferev, V.S., Bakholdin, S.A., and Nosov, Yu.G., Crystallogr. Rep., 2008, vol. 53, no. 7, p. 1194.