Simonov, V. D.; Chernova, L. N.; Akhmerova, S. G.; Yasman, Ya. B.
Journal of Organic Chemistry USSR (English Translation), 1980 , vol. 16, p. 1974 - 1978
Zhurnal Organicheskoi Khimii, 1980 , vol. 16, # 11 p. 2313 - 2318