Journal of Organic Chemistry USSR (English Translation), , vol. 22, p. 1275 - 1280
Zhurnal Organicheskoi Khimii, , vol. 22, # 7 p. 1416 - 1422

Kulinkovich, O. G.; Tischenko, I. G.; Sviridov, S. V.; Divak, V. A.
Journal of Organic Chemistry USSR (English Translation), 1987 , vol. 23, # 5 p. 880 - 885
Zhurnal Organicheskoi Khimii, 1987 , vol. 23, # 5 p. 976 - 981