Borovikova, G. S.; Levchenko, E. S.; Borovik, E. I.; Darmokhval, E. A.
Journal of Organic Chemistry USSR (English Translation), 1984 , vol. 20, p. 171 - 176
Zhurnal Organicheskoi Khimii, 1984 , vol. 20, # 1 p. 190 - 196