@misc{indiciaea8d6d49a5e17,
  title = {Assessing trail conditions in protected areas: Application of a problem-assessment method in Great Smoky Mountains National Park, USA},
  author = {Yu-Fai Leung and Jeffrey L. Marion},
  year = {2002},
  doi = {10.1017/s0376892999000399},
  url = {https://pubs.usgs.gov/publication/5223928},
  note = {Source identifier: 5223928}
}