@misc{Le_Boulengé_E._Ecological_1981,
 author={Le Boulengé, E. and Le Boulengé-Nguyen, P. Y.},
 volume={26},
 number={4},
 copyright={Rights Reserved - Free Access},
 journal={Acta Theriologica},
 address={Białowieża},
 howpublished={online},
 year={1981},
 language={eng ; sum. eng. ; pol.},
 title={Ecological study of a muskrat population},
 type={Text},
 URL={http://rcin.org.pl/ibs/Content/10921/PDF/BI002_26008_Cz-40-2_Acta-T26-nr4-47-82_o.pdf},
 keywords={density, dispersion, population dynamics, migration, Ondatra zibethicus, badania ekologiczne, dynamika populacji, ocena zagęszczenia, migracyjność, piżmak},
}