Akhmatdinov, R. T.; Kantor, E. A.; Karakhanov, R. A.; Rakhmankulov, D. L.
Journal of Organic Chemistry USSR (English Translation), 1981 , vol. 17, # 3 p. 400 - 403
Zhurnal Organicheskoi Khimii, 1981 , vol. 17, # 3 p. 478 - 481