Brennan, Colin M.; Johnson, David C.; McDonnell Peter D.
Journal of the Chemical Society, Perkin Transactions 2: Physical Organic Chemistry (1972-1999), 1989 , p. 957 - 962
Jackson, Richard F. W.; Raphael, Ralph A.
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1984 , # 3 p. 535 - 539
Brennan, Colin M.; Johnson, David C.; McDonnell Peter D.
Journal of the Chemical Society, Perkin Transactions 2: Physical Organic Chemistry (1972-1999), 1989 , p. 957 - 962