@misc{indiciaeaee847ea45ae,
  title = {A variable, circular‐arc rule; An aid in constructing stereographic projections},
  author = {Robert E. Wallace and B. Fried and John Guptil},
  year = {2014},
  doi = {10.1029/tr035i004p00645},
  url = {https://pubs.usgs.gov/publication/70221471},
  note = {Source identifier: 70221471}
}