1. Beavers blamed for train wreck;Anonymous,1984
2. Beaver dam collapse leads to derailment;Anonymous,2003
3. Riparian habitat restoration and beavers;Apple,1985
4. Beaver-pond sequence morphology and sedimentation in northwestern Montana;Bigler;Physical Geography,2001
5. The beaver and the stream;Brayton;Journal of Soil and Water Conservation,1984