@Article{ 
  DovTen18a,
  author = { Dovetta, Simone and Tentarelli, Lorenzo },
  title = { $L^2$-critical NLS on noncompact metric graphs with localized  nonlinearity: topological and metric features },
  journal = { Calc. Var. Partial Differential Equations },
  year = { 2019 },
  doi = { 10.1007/s00526-019-1565-5 },
  volume = { 58 },
  number = { 3 },
  pages = { art. 108, 26pp },
  URL = { http://cvgmt.sns.it/paper/5632/ },
  note = { cvgmt preprint}
}