Olah, George A.; Narang, Subhash C.; Garcia-Luna, Armando
Synthesis, 1980 , # 8 p. 661 - 662

Gavrishova, T. N.; Shastin, A. V.; Balenkova, E. S.
Journal of Organic Chemistry USSR (English Translation), 1991 , vol. 27, # 6.1 p. 1064 - 1067
Zhurnal Organicheskoi Khimii, 1991 , vol. 27, # 6 p. 1222 - 1226

Gavrishova, T. N.; Shastin, A. V.; Balenkova, E. S.
Journal of Organic Chemistry USSR (English Translation), 1991 , vol. 27, # 6.1 p. 1064 - 1067
Zhurnal Organicheskoi Khimii, 1991 , vol. 27, # 6 p. 1222 - 1226