@article {3002,
	title = {Visitor Impact on Backcountry Campsites in the Great Smoky Mountains},
	journal = {Environmental Management},
	volume = {2},
	year = {1978},
	month = {September},
	pages = {431-442},
	keywords = {Camping, Conservation, Tourism},
	url = {http://www.springerlink.com/content/h746715536812446/},
	author = {Susan Power Bratton and Hickler, Matthew G and Graves, James H}
}
@article {6865,
	title = {Trail and Campsite Erosion Survey for Great Smoky Mountains National Park: Part II. Patterns of Overnight Backcountry Use and the Condition of Campsites},
	year = {1977},
	institution = {Uplands Field Research Laboratory },
	address = {Gatlinburg, TN},
	keywords = {Camping, Trail erosion, Trails},
	issn = {16},
	url = {https://archive.org/stream/trailcampsiteero16brat$\#$page/n0/mode/2up},
	author = {Susan Power Bratton and Hickler, Matthew G and Graves, James H}
}
@article {4315,
	title = {Trail and Campsite Erosion Survey for Great Smoky Mountains National Park Part VI: The Description of Individual Trails},
	year = {1977},
	note = {Maps, Illustrations},
	institution = {Uplands Field Research Laboratory, Great Smoky Mountains National Park },
	address = {Gatlinburg, Tenn.},
	keywords = {Camping, Conservation -- Surveying, Conservation -- Trails, Park development -- Campaigning and Promoting, Trail erosion, Trails},
	url = {http://archive.org/details/trailcampsiteero04brat},
	author = {Susan Power Bratton and Hickler, Matthew G and Graves, James H}
}
@article {6863,
	title = {Trail and Campsite Erosion Survey for Great Smoky Mountains National Park: Part IV. The Description of Individual Trails},
	year = {1977},
	institution = {Uplands Field Research Laboratory },
	address = {Gatlinburg, TN},
	keywords = {Camping, Trail erosion, Trails},
	issn = {16},
	url = {https://archive.org/stream/trailcampsiteero03brat$\#$page/n1/mode/2up},
	author = {Susan Power Bratton and Hickler, Matthew G and Graves, James H}
}
