@misc{indiciae53424ef1180a,
  title = {Anasazi solar marker: The use of a natural rockfall},
  author = {E. B. Newman and R. K. Mark and R.G. Vivian},
  year = {1982},
  doi = {10.1126/science.217.4564.1036},
  url = {https://pubs.usgs.gov/publication/70011456},
  note = {Source identifier: 70011456}
}