1. A. L. Markman and V. P. Rzhekhin, Gossypol and its Derivatives [in Russian], Pishchevaya Prom-st, Moscow (1965).
2. B. T. Ibragimov, G. B. Nazarov, and S. A. Talipov, Khim. Prir. Soedin., 666 (1988).
3. G. B. Nazarov, B. T. Ibragimov, and T. F. Aripov, Khim. Prir. Soedin., 661 (1988).
4. N. I. Baram, F. G. Kamaev, Kh. L. Ziyaev, L. Biktimirov, A. I. Ismailov, G. B. Nazarov, and B. T. Ibragimov, Khim. Prir. Soedin., 650 (1988).
5. B. T. Ibragimov, M. Gdaniec, and B. N. Dadabaev, J. Inclusion Phen. Molec. Recognition,8, 333 (1990).