1. R. P. Miller and R. A. Mercer, Mineral. Mag. 35, 250 (1965).
2. Handbook of Minerals, Ed. by F. V. Chukhrov (Nauka, Moscow, 1981), Vol. 3, issue 2, p. 83 [in Russian].
3. M. A. Mikhailov, Candidate’s Dissertation in Geology and Mineralogy (Institute of Geology and Geophysics SB AS SSSR, Novosibirsk, 1984).
4. T. V. Demina, Candidate’s Dissertation in Geology and Mineralogy (Institute of Geology and Geophysics SB AS SSSR, Novosibirsk, 1980).
5. M. A. Mikhailov, T. V. Demina, Yu. I. Smolin, et al., Proc. Int. Conf. Spectroscopy, X-Ray Diffraction Analysis, and Crystal Chemistry of Minerals, Ed. by A. I. Bakhtin (Izd-vo Kazan Univ., Kazan, 1997), p. 207.