Koval', I. V.; Oleinik, T. G.; Tarasenko, A. I.; Kremlev, M. M.
Journal of Organic Chemistry USSR (English Translation), 1985 , vol. 21, # 12 p. 2358 - 2365
Zhurnal Organicheskoi Khimii, 1985 , vol. 21, # 12 p. 2578 - 2587