Giddings, Rodney M.; Jones-Parry, Richard; Salmon, J. Roger; Whittaker, David
Journal of the Chemical Society, Perkin Transactions 2: Physical Organic Chemistry (1972-1999), 1982 , p. 725 - 728
Ratner, V. V.; Isaeva, Z. G.; Arbuzov, B. A.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1987 , vol. 36, # 1 p. 184 - 187
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1987 , # 1 p. 206 - 209