@misc{indiciae8b1f1a7f7a2e,
  title = {Line plotting program using DI-3000/Grafmaker routines},
  author = {Poppen, William A., Jr. and Smith-Taylor, Rudeen},
  year = {1986},
  url = {https://ntrs.nasa.gov/citations/19870008009},
  note = {Source identifier: 19870008009}
}