@Article{ 
  BucGia14,
  author = { Bucur, Dorin and Giacomini, Alessandro },
  title = { FABER-KRAHN INEQUALITIES FOR THE ROBIN-LAPLACIAN: A FREE DISCONTINUITY APPROACH },
  journal = { Arch. Ration. Mech. Anal. },
  year = { 2015 },
  volume = { 218 },
  pages = { 757-824 },
  URL = { http://cvgmt.sns.it/paper/2328/ },
  note = { cvgmt preprint}
}