Levchenko, E. S.; Pel'kis, N. P.; Kalinin, V. N.; Duzhak, A. A.
Journal of Organic Chemistry USSR (English Translation), 1982 , p. 1028 - 1033
Zhurnal Organicheskoi Khimii, 1982 , vol. 18, # 6 p. 1191 - 1197