@Misc{ 
  mos01,
  author = { Mosconi, Sun-ra J. N. },
  title = { Discrete regularity for elliptic equations on graphs },
  journal = {  },
  year = { 2001 },
  pages = { 20 },
  URL = { http://cvgmt.sns.it/paper/53/ },
  note = { cvgmt preprint}
}