Koh Kyoungmoo, Wong-Foy Antek G, Matzger Adam J
Department of Chemistry and the Macromolecular Science and Engineering Program, University of Michigan, 930 North University Ave, Ann Arbor, MI 48109-1055, USA.
Angew Chem Int Ed Engl. 2008;47(4):677-80. doi: 10.1002/anie.200705020.