@Article{ 
  KovWei13,
  author = { Kovarik, Hynek and Weidl, Timo },
  title = { Improved Berezin-Li-Yau inequalities with magnetic field },
  journal = { Proc. Royal Soc. Edinburgh, Sect. A },
  year = { 2015 },
  volume = { 145 },
  number = { 1 },
  pages = { 145-160 },
  URL = { http://cvgmt.sns.it/paper/2321/ },
  note = { cvgmt preprint}
}