Kozhich, D. T.; Vasilevskii, V. I.; Mironov, A. F.; Evstigneeva, R. P. Journal of Organic Chemistry USSR (English Translation), 1980 , vol. 16, p. 745 - 750 Zhurnal Organicheskoi Khimii, 1980 , vol. 16, # 4 p. 849 - 855