Pigou, Paul E.; Stirling, Charles J. M.
Journal of the Chemical Society, Perkin Transactions 2: Physical Organic Chemistry (1972-1999), 1988 , p. 725 - 730
Fishwick, Brian R.; Rowles, David K.; Stirling, Charles J. M.
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1986 , p. 1171 - 1180