Rosen Brad M, Peterca Mihai, Huang Chenghong, Zeng Xiangbing, Ungar Goran, Percec Virgil
Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104-6323, USA.
Angew Chem Int Ed Engl. 2010 Sep 17;49(39):7002-5. doi: 10.1002/anie.201002514.