@Article{ 
  MerNov14,
  author = { Mercier, Gwenael and Novaga, Matteo },
  title = { Mean curvature flow with obstacles: existence, uniqueness and regularity
  of solutions },
  journal = { Interfaces and Free Boundaries },
  year = { 2015 },
  volume = { 17 },
  number = { 3 },
  pages = { 399-426 },
  URL = { http://cvgmt.sns.it/paper/2524/ },
  note = { cvgmt preprint}
}