by Gyul'budagyan, A. L., Khanamiryan, A. Kh, Vartanyan, R. S., Sudzhyan, A. O., Vlasenko, Z. V., Paronikyan, R. G.
Published in Pharmaceutical chemistry journal (01.09.1992)

by Vartanyan, R. S., Gyul'budagyan, A. L., Khanamiryan, A. Kh, Mkrtumyan, . N., Kazaryan, Zh. V.
Published in Chemistry of heterocyclic compounds (New York, N.Y. 1965) (01.06.1991)

by Khanamiryan, A. Kh, Gyulbudagyan, A. L., Vartanyan, P. S., Dzhafarov, M. Kh, Struchkov, Yu. T.
Published in Russian chemical bulletin (01.03.1993)