@misc{Boratyńska_Krystyna_Systematics_1990,
 author={Boratyńska, Krystyna and Boratyński, Adam},
 volume={13},
 editor={Białobok, Stefan. Redaktor},
 editor={Polska Akademia Nauk. Instytut Dendrologii},
 copyright={Creative Commons Attribution BY-SA 4.0 license},
 journal={Nasze drzewa leśne},
 address={Warszawa-Poznań},
 howpublished={online},
 year={1990},
 publisher={Państwowe Wydawnictwo Naukowe},
 language={mul},
 title={Systematics and geographical distribution},
 type={Text},
 keywords={Salix alba, Salix fragilis, willow, systematics of willows, geographical distribution},
}