@misc{Kowalik_Piotr_Possibility_1990,
 author={Kowalik, Piotr},
 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={Possibility of application of willow plantations for energy purpose},
 type={Text},
 keywords={Salix alba, Salix fragilis, willows, plantations for energy purpose},
}