@Article{ 
  BucMaz14,
  author = { Bucur, Dorin and Mazzoleni, Dario },
  title = { A surgery result for the spectrum of the Dirichlet Laplacian },
  journal = { SIAM J. Math. Anal. },
  year = { 2015 },
  doi = { 10.1137/140992448 },
  volume = {  47 },
  number = { 6 },
  pages = { 4451-4466 },
  URL = { http://cvgmt.sns.it/paper/2538/ },
  note = { cvgmt preprint}
}