@misc{Chałupka_Władysław_Flowering_1993,
 author={Chałupka, Władysław},
 editor={Białobok, Stefan. Redaktor},
 editor={Boratyński, Adam. Redaktor},
 editor={Bugała, Władysław. Redaktor},
 editor={Polska Akademia Nauk. Instytut Dendrologii},
 copyright={Creative Commons Attribution BY-SA 4.0 license},
 address={Poznań-Kórnik},
 howpublished={online},
 year={1993},
 publisher={Sorus},
 language={mul},
 title={Flowering and seed bearing},
 type={Text},
 URL={http://www.rcin.org.pl/Content/188571/PDF/KOR001_155586_1993_Fizjologia-kwitnieni.pdf},
 keywords={Scots pine, Pinus sylvestris, flowering of Scots pine, seed bearing of Scots pine},
}