Yagupol'skii, Yu. L.; Gerus, I. I.; Savina, T. I.
Journal of Organic Chemistry USSR (English Translation), 1988 , vol. 24, p. 61 - 65
Zhurnal Organicheskoi Khimii, 1988 , vol. 24, # 1 p. 73 - 77

Yagupol'skii, Yu. L.; Savina, T. I.
Journal of Organic Chemistry USSR (English Translation), 1983 , vol. 19, # 1 p. 71 - 74
Zhurnal Organicheskoi Khimii, 1983 , vol. 19, # 1 p. 79 - 82