Xu Wei, Kelly Ross E A, Otero Roberto, Schöck Maya, Laegsgaard Erik, Stensgaard Ivan, Kantorovich Lev N, Besenbacher Flemming
Interdisciplinary Nanoscience Center (iNANO) and Department of Physics and Astronomy, University of Aarhus, 8000 Aarhus C, Denmark.
Small. 2007 Dec;3(12):2011-4. doi: 10.1002/smll.200700625.