1. H. Hikiami, H. Goto, N. Sekiya, et al., Phytomedicine, 10(6–7), 459–466 (2003).
2. E. E. Klen, F. A. Khaliullin, I. L. Nikitina, et al., Khim.-farm. Zh., 36(11), 18–20 (2002).
3. E. E. Klen, F. A. Khaliullin, and G. F. Iskhakova, Zh. Org. Khim., 41(12), 1881–1882 (2005).
4. G. F. Iskhakova, E. E. Klen, and F. A. Khaliullin, in: Collection of Articles from the Third International Congress of Young Scientists and Specialists, Tomsk (2002), pp. 217–218.
5. M. B. Plotnikov, A. A. Koltunov, and O. I. Aliev, Byull. Eksp. Biol. Med., No. 9, 274–275 (1996).