Tkachenko, S. E.; Sal'nikov, D. I.; Lys, Ya. I.; Fedoseev, V. M.; Zhurilin, V. S. Journal of Organic Chemistry USSR (English Translation), 1983 , vol. 19, # 5 p. 878 - 884 Zhurnal Organicheskoi Khimii, 1983 , vol. 19, # 5 p. 988 - 995