1. G. F. Kasymova, V. K. Burichenko, K. T. Poroshin, and M. V. Berdyeva, Dokl. Akad. Nauk Tadzhik SSR,13, No. 10, 25 (1970).
2. V. A. Shibnev, T. P. Chuvaeva, and K. T. Poroshin, Izv. Akad. Nauk SSSR, Ser. Khim., 121 (1970).
3. V. K. Burichenko, V. G. Ovchinnikova, R. R. Dakhte, and K. T. Poroshin, Dokl. Akad. Nauk Tadzhik SSR,14, No. 3, 30 (1971).
4. Yu. N. Chirgadze and E. P. Rashevskaya, Biofizika,14, 608 (1969).
5. Yu. N. Chirgadze, E. P. Rashevskaya, and V. A. Shibnev, First Symposium on Chemistry of Peptides, Abstracts of Papers [in Russian], Riga (1967), p. 13.