@Article{ 
  muc08,
  author = { Mucci, Domenico },
  title = { Strong density results in trace spaces of maps between manifolds },
  journal = { Manuscripta Math. },
  year = { 2009 },
  volume = { 128 },
  number = { 4 },
  pages = { 421-441 },
  URL = { http://cvgmt.sns.it/paper/1187/ },
  note = { cvgmt preprint}
}