@misc{indiciaec0574b8f97fd,
  title = {Impacts of vehicles on natural terrain at seven sites in the San Francisco Bay area},
  author = {H. G. Wilshire and J. K. Nakata and S. Shipley and K. Prestegaard},
  year = {1978},
  doi = {10.1007/bf02430676},
  url = {https://pubs.usgs.gov/publication/70012508},
  note = {Source identifier: 70012508}
}