@misc{Hansson_L._Vole_1986,
 author={Hansson, L.},
 volume={31},
 number={29},
 copyright={Rights Reserved - Free Access},
 address={Białowieża},
 journal={Acta Theriologica},
 howpublished={online},
 year={1986},
 language={eng ; sum. eng. ; pol.},
 type={Text},
 title={Vole snow trails and tunnels as density indicators},
 URL={http://www.rcin.org.pl/Content/11187/PDF/BI002_2613_Cz-40-2_Acta-T31-nr29-401-408_o.pdf},
 keywords={density, Microtus agrestis, snow trails, snow tunnels, ślady na śniegu, zagęszczenie osobników, Nornik bury},
}