1. M. N. Bluvshtein and V. N. Boricheva, Trans. VIO, No. 31 (1961).
2. M. N. Bluvshtein, et al., TsIIn ChM, series 8, information No. 5 (1962).
3. M. N. Bluvshtein, Ogneupory, No. 12 (1960).
4. R. G. Wells and L. H. Van Vlack,34, No. 2 (1951).
5. M. N. Bluvshtein, et al., Ogneupory, No. 2 (1957).