@Misc{ 
  Luc4,
  author = { Luca M. Martinazzi,  },
  title = { The non-parametric problem of Plateau in arbitrary codimension },
  journal = {  },
  year = { 2004 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/3962/ },
  note = { cvgmt preprint}
}