TY  - RPRT
TI  - The influence of sampling interval on the accuracy of trail impact assessment
AU  - Y.-F. Leung
AU  - J. L. Marion
PY  - 1999
DO  - 10.1016/s0169-2046(98)00110-8
UR  - https://pubs.usgs.gov/publication/5223841
ID  - 5223841
ER  -