Titova, M. V.; Berestovitskaya, V. M.; Perekalin, V. V.
Journal of Organic Chemistry USSR (English Translation), 1981 , vol. 17, p. 1172 - 1173
Zhurnal Organicheskoi Khimii, 1981 , vol. 17, # 6 p. 1322 - 1323