Petrova, T. D.; Ryabichev, A. G.; Savchenko, T. I.; Kolesnikova I. V.; Platonov, V. E. Journal of Organic Chemistry USSR (English Translation), 1988 , p. 1362 - 1366 Zhurnal Organicheskoi Khimii, 1988 , vol. 24, # 7 p. 1513 - 1517