1. Vil’ke K.-T. Crystal Growth, Leningrad 1977. Nedra. [in Russian].
2. Lodiz R.A., Parker R.L. Crystal Growth. Mir, Moscow. 1974 [in Russian].
3. Bakly. Crystal Growth. Inostr. Lit., Moscow 1954 [in Russian].
4. Kuznetsov V.D. Crystals and Crystallization. Goslitizdat, Moscow. 1954 [in Russian].
5. Schaffer P.S. J. Am. Ceram. Soc. 1965. 48.