1. Mashkovskii, M.D., Lekarstvennye sredstva (Drugs), Kharkov: Torsing, 1997, vol. 1, pp. 188, 280. 399.
2. Zheng, M.K.F., Zheng, M. Deng, D.Y, Oils, S., Luo, X., Chen, K., Liu H., and Jiang, H., Bioorg. Med. Chem. Lett., 2007, vol. 17, p. 2414.
3. Sharma, P., Kumar A., and Pandey, P., Indian J. Chem., 2006, vol. 45B, p. 2077.
4. Dandia, A. Sehgal, V., and Singh, P., Indian J. Chem., 1993, vol. 32B, p. 1288.
5. El-Gendy Adel, A., Abdou Naida, A., El-Taber, Z.S., and El-Banna Hosny, A., Alexandria J. Pharm. Sci., 1997, vol. 7, p. 99.