Wu, Peng; Feldman, Alina K.; Nugent, Anne K.; Hawker, Craig J.; Scheel, Arnulf; Voit, Brigitte; Pyun, Jeffrey; Frechet, Jean M. J.; Sharpless, K. Barry; Fokin, Valery V.
Angewandte Chemie - International Edition, 2004 , vol. 43, # 30 p. 3928 - 3932