Petrosyan, L.M.; Gevorgyan, G.A.; Engoyan, A.P.; Mndzhoyan, O.L.
Journal of Organic Chemistry USSR (English Translation), 1984 , vol. 20, # 3 p. 551 - 554
Zhurnal Organicheskoi Khimii, 1984 , vol. 20, # 3 p. 608 - 612