Zelenin, K. N.; Alekseev, V. V.; Khrustalev, V. A.; Yakimovich, S. I.; Nikolaev, V. N.; Koshmina, N. V. Journal of Organic Chemistry USSR (English Translation), 1984 , vol. 20, p. 162 - 167 Zhurnal Organicheskoi Khimii, 1984 , vol. 20, # 1 p. 180 - 187