Sosnovskikh, V. Ya.; Luk'yanchikov, V. F.; Proshutinskii, V. I.
Journal of Organic Chemistry USSR (English Translation), 1981 , vol. 17, # 11 p. 2105 - 2109
Zhurnal Organicheskoi Khimii, 1981 , vol. 17, # 11 p. 2356 - 2360