@article{Chosińska:2012,
  author  = "K. Chosińska and L. Dudu¶ and Z. Jakubiec",
  title   = "Supplemental feeding of birds in human settlements of western Poland",
  journal = "International Studies on Sparrows",
  volume  = "Vol. 36",
  pages   = "95--102",
  year    = "2012",
}