@misc{Broniewska_Katarzyna_Ulmus_1996-2013,
 author={Broniewska, Katarzyna},
 copyright={Creative Commons Attribution BY-SA 4.0 license},
 howpublished={online},
 year={1996-2013},
 language={mul},
 type={Image},
 title={Ulmus laevis Pall.},
}