@Article{ 
  FraSte17,
  author = { Franceschi, Valentina and Stefani, Giorgio },
  title = { Symmetric double bubbles in the Grushin plane },
  journal = { ESAIM Control Optim. Calc. Var. },
  year = { 2019 },
  doi = { 10.1051/cocv/2018055 },
  volume = { 25 },
  pages = { Paper No. 77, 37 },
  URL = { http://cvgmt.sns.it/paper/3721/ },
  note = { cvgmt preprint}
}