Pavlyuchenko, A. I.; Purvanyatskas, G. V.; Smirnova, N. I.; Titov, V. V.
Journal of Organic Chemistry USSR (English Translation), 1986 , vol. 22, # 7 p. 1375 - 1378
Zhurnal Organicheskoi Khimii, 1986 , vol. 22, # 7 p. 1524 - 1529