@misc{Broniewska_Katarzyna_Pinus_2004-2011,
 author={Broniewska, Katarzyna and Nowak, Kinga},
 copyright={Creative Commons Attribution BY-SA 4.0 license},
 howpublished={online},
 year={2004-2011},
 language={mul},
 title={Pinus strobus L.},
}