title: Imaging of catenated, figure-of-eight, and trefoil knot polymer rings.
authors: CNRS, Université Bordeaux, Laboratoire de Chimie des Polymères Organiques, ENSCPB, 16, Avenue Pey Berland, 33607 Pessac Cedex, France.
authors: Michel
authors: M
authors: Schappacher
authors: Alain
authors: A
authors: Deffieux