Palei, B. A.; Obydenova, R. I.; Eremicheva, N. V.; Davydov, V. D. Journal of Organic Chemistry USSR (English Translation), 1983 , vol. 19, # 11 p. 2071 - 2075 Zhurnal Organicheskoi Khimii, 1983 , vol. 19, # 11 p. 2368 - 2373