@Article{ 
  LeoSar21,
  author = { Leonardi, Gian Paolo and Saracco, Giorgio },
  title = { The isoperimetric problem in $2$d domains without necks },
  journal = { Calc. Var. Partial Differential Equations },
  year = { 2022 },
  doi = { 10.1007/s00526-021-02153-9 },
  volume = { 61 },
  number = { 2 },
  pages = { 56 },
  URL = { http://cvgmt.sns.it/paper/5237/ },
  note = { cvgmt preprint}
}