Sukhanov, N. N.; Yanovskaya, L. A.; Chetverikov, V. P. Journal of Organic Chemistry USSR (English Translation), 1986 , vol. 22, # 6 p. 1206 - 1207 Zhurnal Organicheskoi Khimii, 1986 , vol. 22, # 6 p. 1338 - 1339