%0 Journal Article %A Pierluigi Colli %A Philippe Laurençot %T A phase-field approximation of the Willmore flow with volume constraint %J Interfaces and free boundaries %D 2011 %P 341-351 %V 13 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4171/ifb/261/ %R 10.4171/ifb/261 %F 10_4171_ifb_261