Vodovozova, E. L.; Mikhalev, I. I.; Rzhaninova, A. A.; Garaev, M. M.; Molotkovsky, Yul. G. Russian Journal of Bioorganic Chemistry, 1995 , vol. 21, # 9 p. 626 - 632 Bioorganicheskaya Khimiya, 1995 , vol. 21, # 9 p. 724 - 730