@misc{indiciaee99b7faaf547,
  title = {NASA's online machine aided indexing system},
  author = {Silvester, June P. and Genuardi, Michael T. and Klingbiel, Paul H.},
  year = {1993},
  url = {https://ntrs.nasa.gov/citations/19940010536},
  note = {Source identifier: 19940010536}
}