@article{ref1,
title="Habitat and Structural Factors Influencing Beaver Interference with Highway Culverts",
journal="Wildlife society bulletin",
year="2001",
author="Jensen, PG and Curtis, Paul D. and Lehnert, ME and Hamelin, DL",
volume="29",
number="2",
pages="654-664",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0091-7648",
doi="",
url="http://dx.doi.org/"
}