Cremin, Denis J.; Hegarty, Anthony F.; Begley, Michael J.
Journal of the Chemical Society, Perkin Transactions 2: Physical Organic Chemistry (1972-1999), 1980 , p. 412 - 420
Landor, Stephen R.; Fomum, Z. Tanee; Asobo, P. Forche; Landor, Phyllis D.; Johnson, Andrew
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1989 , p. 251 - 254