@article{UrbasGreiner2006,
  author    = {Tadas D. Urbas and Walter Greiner},
  title     = {Nuclear giant quadrupole resonances in spherical even-even nuclei},
  journal   = {Physical review letters},
  volume    = {24},
  number    = {18},
  pages     = {1026 -- 1028},
  url       = {http://link.aps.org/abstract/PRL/v24/p1026},
  year      = {2006},
}