PYRROLO[3,2-C]PIPERIDINES СтатьяBorisova T.N., Varalmov A.V., Sergeeva N.D., Soldatenkov A.T., Zvolinskii O.V., Astakhov A.A., Prostakov N.S.Chemistry of Heterocyclic Compounds. Том 23. 1987. С. 799-803