@Article{ 
  CesNov16,
  author = { Cesaroni, Annalisa and Novaga, Matteo },
  title = { Volume constrained minimizers of the fractional perimeter with a
  potential energy },
  journal = { Discrete Contin. Dyn. Syst. S },
  year = { 2017 },
  volume = { 4 },
  number = { 10 },
  pages = { 715-727 },
  URL = { http://cvgmt.sns.it/paper/2950/ },
  note = { cvgmt preprint}
}