@Misc{ 
  pau04,
  author = { Pauls, Scott },
  title = { H-minimal graphs of low regularity in the Heisenberg group },
  journal = { Comm. Math. Helv. },
  year = { 2004 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/532/ },
  note = { cvgmt preprint}
}