Velezheva, V. S.; Yaroslavskii, I. S.; Suvorov, N. N.
Journal of Organic Chemistry USSR (English Translation), 1982 , vol. 18, p. 2129 - 2136
Zhurnal Organicheskoi Khimii, 1982 , vol. 18, # 11 p. 2403 - 2411