TY  - RPRT
TI  - Landward and eastward shift of Alaskan polar bear denning associated with recent sea ice changes
AU  - Anthony S. Fischbach
AU  - Steven C. Amstrup
AU  - David C. Douglas
PY  - 2007
DO  - 10.1007/s00300-007-0300-4
UR  - https://pubs.usgs.gov/publication/70031382
ID  - 70031382
ER  -