1. Baron J. 1976. Environmental analysis of the proposed Blue Ridge Parkway Extension from Oconaluftee to Deep Creek Campground. Management Rept. No. 9, Vol. I. U.S. Department of the Interior, National Park Service, Uplands Field Research Laboratory, Great Smoky Mountains National Park, Tennessee, 99 pp.
2. Barr, A. J., and J. H. Goodnight. 1972. Statistical Analysis System. North Carolina State University. Raleigh (Computer Programs). 260 pp.
3. Bayfield, N. G. 1973. Use and deterioration of some Scottish hill paths. J. Applied Ecology 10:639–648.
4. Boorman, L. A., and R. M. Fuller. 1977. Studies of the impact of paths on the dune vegetation at Winterton, Norfolk, England. Biolical Conservation 12:205–215.
5. Bratton, S. P., M. G. Hickler, and J. H. Graves. 1977. Trail and campsite erosion survey for Great Smoky Mountains National Park. Management Rept. No. 16, Vols. I–IV. U.S. Department of the Interior, National Park Service, Uplands Field Research Laboratory, Great Smoky Mountains National Park, Tennessee, 567 pp.