@article{824086,
  author = {P Engels and I Coddington and P Haljan and V Schweikhard and Eric Cornell},
  title = {Observation of long-lived vortex aggregates in rapidly rotating Bose-Einstein condensates},
  year = {2003},
  number = {90},
  month = {2003-01-01 00:01:00},
  publisher = {Physical Review Letters},
  language = {en},
}