@Article{ 
  DovSerTen25,
  author = { Dovetta, Simone and Serra, Enrico and Tentarelli, Lorenzo },
  title = { Non-uniqueness of normalized NLS ground states on polygons with homogeneous Neumann boundary conditions },
  journal = { Discrete Contin. Dyn. Syst. },
  year = { 2026 },
  doi = { 10.3934/dcds.2025182 },
  volume = { 53 },
  pages = { 263-286 },
  URL = { http://cvgmt.sns.it/paper/7058/ },
  note = { cvgmt preprint}
}