@article {5059, title = {A new cost-distance model for human accessibility and an evaluation of accessibility bias in permanent vegetation plots in Great Smoky Mountains National Park, USA}, journal = {Journal of Vegetation Science}, volume = {20}, year = {2009}, note = {Maps, Tables}, pages = {1099-1109}, publisher = {International Association for Vegetation Science}, keywords = {Ecology, Ecosystem, Hiking, Vegetation monitoring}, author = {R. Todd Jobe and White, Peter S} }