@misc{indiciaeb62317bf34cb,
  title = {A self-modifying cellular automaton model of historical urbanization in the San Francisco Bay area},
  author = {K.C. Clarke and S. Hoppen and L. Gaydos},
  year = {1997},
  doi = {10.1068/b240247},
  url = {https://pubs.usgs.gov/publication/70019926},
  note = {Source identifier: 70019926}
}