Slavcheva, Yu. M.; Perekalin, V. V.; Lipina, E. S.; Pavlova, Z. F.
Journal of Organic Chemistry USSR (English Translation), 1980 , vol. 16, p. 2067 - 2070
Zhurnal Organicheskoi Khimii, 1980 , vol. 16, # 11 p. 2413 - 2416

Slavcheva, Yu. M.; Perekalin, V. V.; Lipina, E. S.; Pavlova, Z. F.
Journal of Organic Chemistry USSR (English Translation), 1980 , vol. 16, p. 2067 - 2070
Zhurnal Organicheskoi Khimii, 1980 , vol. 16, # 11 p. 2413 - 2416

Gabitov,F.A. et al.
Zhurnal Organicheskoi Khimii, 1977 , vol. 13, # 5 p. 1117 - 1118,1026 - 1027