@misc{Wójcicki_Jan_J._(1950–_)_Variability_1990,
 author={Wójcicki, Jan J. (1950– )},
 editor={Zarzycki, Kazimierz (1930- ). Redaktor},
 editor={Korzeniak, Urszula. Redaktor},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 journal={Polish Botanical Studies. Guidebook Series},
 address={Kraków},
 howpublished={online},
 year={1990},
 publisher={Polish Academy of Sciences, W. Szafer Institute of Botany},
 language={eng},
 type={Text},
 title={Variability of recent and fossil fruit-stones of Prunus f ruticosa Pall., P. cerasus L., and P. avium (L.) L.},
 URL={http://www.rcin.org.pl/Content/217212/PDF/KR171_253136_ResProgRep1988-90_Wojcicki-Variability-Prunus.pdf},
}