@Article{ 
  dra06,
  author = { Dragoni, Federica },
  title = { Limiting behavior of solutions of subelliptic heat equations },
  journal = { NoDea },
  year = { 2008 },
  volume = { 14 },
  number = { 3-4 },
  pages = { 429-443 },
  URL = { http://cvgmt.sns.it/paper/45/ },
  note = { cvgmt preprint}
}