Drozdova, T. I.; Mirskova, A. N.; Levkovskaya, G. G.; Kalikhman, I. D.; Voronkov, M. G.
Journal of Organic Chemistry USSR (English Translation), 1988 , vol. 24, # 6 p. 1116 - 1119
Zhurnal Organicheskoi Khimii, 1988 , vol. 24, # 6 p. 1240 - 1243

Drozdova, T.I.; Levkovskaya, G.G.; Mirskova, A.N.
Journal of Organic Chemistry USSR (English Translation), 1991 , vol. 27, # 11.1 p. 2021 - 2024
Zhurnal Organicheskoi Khimii, 1991 , vol. 27, # 11 p. 2281 - 2285