Petrovskaya, G.A.; Vilenskaya, M.R.; Karpenko, A.N.; Panchenko, Yu.V.
Journal of Organic Chemistry USSR (English Translation), 1980 , vol. 16, # 5 p. 829 - 831
Zhurnal Organicheskoi Khimii, 1980 , vol. 16, # 5 p. 950 - 952