@misc{indiciae1e589c98e1d1,
  title = {Texas Instruments Model 59 hand-calculator program to calculate gravity anomaly over 2-D prisms of as much as 18 vertices},
  author = {Donald N. Haines and David L. Campbell},
  year = {1979},
  doi = {10.3133/ofr791687},
  url = {https://pubs.usgs.gov/publication/ofr791687},
  note = {Source identifier: ofr791687}
}