@misc{indiciaecc61429add72,
  title = {System 8, GSMAP, GSMEDIT, GSMUTIL, GSPOST, GSDIG and other programs version 8, for the IBM PC and compatible microcomputers, to assist workers in the earth sciences},
  author = {G.I. Selner and Richard B. Taylor},
  year = {1992},
  doi = {10.3133/ofr92217b},
  url = {https://pubs.usgs.gov/publication/ofr92217B},
  note = {Source identifier: ofr92217B}
}