Avdeenko, A. P.; Velichko, N. V.; Romanenko, E. A.; Pirozhenko, V. V.; Shurpach, V. I.
Journal of Organic Chemistry USSR (English Translation), 1991 , vol. 27, # 11.2 p. 2085 - 2095
Zhurnal Organicheskoi Khimii, 1991 , vol. 27, # 11 p. 2350 - 2361