1. Buycikbingol E, Das N, Klopman G (1994) Arch Pharm327: 129
2. Bikker JA, Weaver DF (1993) J Mol Struct (THEOCHEM)281: 173
3. LaRcau RP, Wau W, Anderson VE (1989) Biochemistry28: 3619
4. Desenko SM, Orlov VD, Shishkin OV, Bozykin KA, Lindeman SV, Stzuchkov YuT (1993) Khimiya Geterotsikl Soedin (Chemistry of Heterocyclic Compounds) 1539
5. Shishkin OV, Polyakova AS, Prezhdo OV, Desenko SM, Ozlov VD, Stzuchkov YuT (1994) Izvestiya Ross Akad nauk Ser Khim (Russian Chemical Bulletin) 1676