@misc{Broniewska_Katarzyna_Betula_2011-2019,
 author={Broniewska, Katarzyna and Jędrowiak, Anna},
 copyright={Creative Commons Attribution BY-SA 4.0 license},
 howpublished={online},
 year={2011-2019},
 language={mul},
 title={Betula utilis var. jacquemontii (Spach) H.J.P.Winkl.},
 type={Image},
 keywords={woody plant, deciduous tree, Asian species},
}