@Article{ 
  BonKnü15,
  author = { Bonacini, Marco and Knüpfer, Hans },
  title = { Ground states of a ternary system including attractive and repulsive Coulomb-type interactions },
  journal = { Calc. Var. Partial Differential Equations },
  year = { 2016 },
  doi = { 10.1007/s00526-016-1047-y },
  volume = { 55 },
  number = { 5 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/2857/ },
  note = { cvgmt preprint}
}