TY  - RPRT
TI  - Sleeping distance in wild wolf packs
AU  - S.T. Knick
AU  - L.D. Mech
PY  - 1980
DO  - 10.1016/s0163-1047(80)91932-9
UR  - https://pubs.usgs.gov/publication/5221585
ID  - 5221585
ER  -