@misc{indiciaec7c1421f1ffe,
  title = {Texas Instruments Model 59 hand-calculator program to calculate magnetic anomaly over 2-D prisms of up to 12 vertices},
  author = {Donald N. Haines and David L. Campbell},
  year = {1979},
  doi = {10.3133/ofr791620},
  url = {https://pubs.usgs.gov/publication/ofr791620},
  note = {Source identifier: ofr791620}
}