@Article{Burt,
  author       = {Ml Burt and J Aars and T A Marques and S. T. Buckland},
  title        = {Modelling spatial variation in density of the Barents Sea polar bear subpopulation},
  numero       = {113},
  owner        = {tiago},
  paperprinted = {yes},
  timestamp    = {2011.04.11},
}