Wu Cheng-Hsien, Lockett Matthew R, Smith Lloyd M
Department of Chemistry, University of Wisconsin-Madison, 1101 University Ave., Madison, WI 53706, USA.
Angew Chem Int Ed Engl. 2012 May 7;51(19):4628-32. doi: 10.1002/anie.201109058. Epub 2012 Mar 30.