author  = "G. Or³owski and P. Kamiński and Z. Kasprzykowski and Z. Zawada and B. Koim-Puchowska and M. Szady-Grad and J. Klawe",
  title   = "Essential and nonessential elements in nestling rooks corvus frugilegus from Eastern Poland with a special emphasis on their high cadmium contamination",
  journal = "Archives of Environmental Contamination and Toxicology",
  volume  = "Vol. 63",
  number  = "no 4",
  pages   = "601--611",
  year    = "2012",