Litvinenko, L. M.; Kravchenko, V. V.; Popov, A. F.; Kostenko, L. I.
Journal of Organic Chemistry USSR (English Translation), 1982 , vol. 18, # 7 p. 1324 - 1328
Zhurnal Organicheskoi Khimii, 1982 , vol. 18, # 7 p. 1516 - 1520