Caddick Stephen, Cloke F Geoffrey N, Hitchcock Peter B, de K Lewis Alexandra K
Christopher Ingold Laboratories, Department of Chemistry, University College London, 20 Gordon Street, London, WC1H OAJ, UK.
Angew Chem Int Ed Engl. 2004 Nov 5;43(43):5824-7. doi: 10.1002/anie.200460955.