@Article{ 
  BorCarTen18,
  author = { Borrelli, William and Carlone, Raffaele and Tentarelli, Lorenzo },
  title = { Nonlinear Dirac Equation On Graphs With Localized Nonlinearities: Bound  States And Nonrelativistic Limit },
  journal = { SIAM J. Math. Anal. },
  year = { 2019 },
  doi = { 10.1137/18M1211714 },
  volume = { 51 },
  number = { 2 },
  pages = { 1046-1081 },
  URL = { http://cvgmt.sns.it/paper/3964/ },
  note = { cvgmt preprint}
}