@article{10_4171_ifb_261,
     author = {Pierluigi Colli and Philippe Lauren\c{c}ot},
     title = {A phase-field approximation of the {Willmore} flow with volume constraint},
     journal = {Interfaces and free boundaries},
     pages = {341--351},
     year = {2011},
     volume = {13},
     number = {3},
     doi = {10.4171/ifb/261},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/ifb/261/}
}