@misc{indiciae93db054abf6d,
  title = {Filter programs GSDFIL and GSMFIL to generalize lines in GSDRAW and GSMAP data bases, using an IBM PC (or compatible) microcomputer},
  author = {G.I. Selner and Richard B. Taylor},
  year = {1988},
  doi = {10.3133/ofr88665b},
  url = {https://pubs.usgs.gov/publication/ofr88665B},
  note = {Source identifier: ofr88665B}
}