Izydore, Robert A.; Chapman, John J.; Mitchell, John A.; Cummings, Robert; Jones, George T.
Journal of the Chemical Society, Perkin Transactions 2: Physical Organic Chemistry (1972-1999), 1988 , p. 1415 - 1422

Journal of Organic Chemistry USSR (English Translation), , vol. 18, p. 1743 - 1749
Zhurnal Organicheskoi Khimii, , vol. 18, # 9 p. 1986 - 1993