@misc{Węgrzyn_M._Bisoniana_1986,
 author={Węgrzyn, M. and Kupczyńska, M.},
 volume={31},
 number={25},
 copyright={Rights Reserved - Free Access},
 address={Białowieża},
 journal={Acta Theriologica},
 howpublished={online},
 year={1986},
 language={eng ; sum. eng. ; pol.},
 type={Text},
 title={Bisoniana XCI. Shape, size and weight of the heart In European bison},
 URL={http://www.rcin.org.pl/Content/11178/PDF/BI002_2613_Cz-40-2_Acta-T31-nr25-327-342_o.pdf},
 keywords={Bison bonasus, heart size, heart shape, heart weight, serce, żubr},
}