Dunbar Robert C, Steill Jeffrey D, Polfer Nicolas C, Berden Giel, Oomens Jos
Chemistry Department, Case Western Reserve University, Cleveland, OH 44106, USA.
Angew Chem Int Ed Engl. 2012 May 7;51(19):4591-3. doi: 10.1002/anie.201200437. Epub 2012 Apr 4.