@article{Ascens_o_2006, title={Factors affecting culvert use by vertebrates along two stretches of road in southern Portugal}, volume={22}, ISSN={1440-1703}, url={http://dx.doi.org/10.1007/s11284-006-0004-1}, DOI={10.1007/s11284-006-0004-1}, number={1}, journal={Ecological Research}, publisher={Wiley}, author={Ascensão, Fernando and Mira, António}, year={2006}, month=July, pages={57–66} }