@misc{indiciaec7141c7864f3,
  title = {OpenStreetMap Collaborative Prototype, Phase 1},
  author = {Eric B. Wolf and Greg D. Matthews and Kevin McNinch and Barbara S. Poore},
  year = {2011},
  doi = {10.3133/ofr20111136},
  url = {https://pubs.usgs.gov/publication/ofr20111136},
  note = {Source identifier: ofr20111136}
}