1. T. A. Adylova and T. I. Tsukervanik (eds.), Guide to Plants of Central Asia [in Russian], Vol. 10, Fan, Tashkent, 1993, 692 pp.
2. P. D. Sokolov (ed.), Plant Resources of the USSR. Flowering Plants, Their Chemical Composition and Use [in Russian], Vol. 7, Nauka, St. Petersburg, 1993, 352 pp.
3. A. B. Trendafilova, M. N. Todorova, and C. V. Gussev, Phytochemistry, 42 (2), 469 (1996).
4. K. Kawazoe, N. Morishita, A. Nagao, Yo. Takaishi, G. Honda, M. Ito, Yo. Takeda, O. K. Kodzhimatov, and O. Ashurmetov, Nat. Med., 57 (3), 114 (2003).
5. J. A. Marco, J. F. Sanz-Cervera, V. Garcia-Lliso, M. Guara, and J. Valles-Xirau, Phytochemistry, 45 (4), 751 (1997).