Sever Mary J, Weisser Jaime T, Monahan Jennifer, Srinivasan Shalini, Wilker Jonathan J
Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907-2084, USA.
Angew Chem Int Ed Engl. 2004 Jan 16;43(4):448-50. doi: 10.1002/anie.200352759.