@Article{ 
  KovWeiRus18,
  author = { Kovarik, Hynek and Ruszkowski, Bartiosch and Weidl, Timo },
  title = { Melas-type bounds for the Heisenberg Laplacian on bounded domains },
  journal = { J. Spectr. Theory },
  year = { 2018 },
  doi = { 10.4171/JST/200 },
  volume = { 8 },
  pages = { 413–434 },
  URL = { http://cvgmt.sns.it/paper/5089/ },
  note = { cvgmt preprint}
}