@Article{ 
  DipPalVal12,
  author = { Dipierro, Serena and Palatucci, Giampiero and Valdinoci, Enrico },
  title = { Existence and symmetry results for a Schrödinger type problem involving the fractional Laplacian },
  journal = { Le Matematiche (Catania) },
  year = { 2013 },
  volume = { 68 },
  number = { 1 },
  pages = { 201–216 },
  URL = { http://cvgmt.sns.it/paper/1797/ },
  note = { cvgmt preprint}
}