@Misc{ 
  GarSpe14,
  author = { Garg, Rahul and Spector, Daniel },
  title = { On regularity of solutions to Poisson's equation },
  journal = {  },
  year = { 2014 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/2401/ },
  note = { cvgmt preprint}
}