@Misc{ 
  del09,
  author = { Delladio, Silvano },
  title = { Functions of class $C^1$ subject to a Legendre condition in an enhanced density set },
  journal = {  },
  year = { 2009 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/1085/ },
  note = { cvgmt preprint}
}