@misc{indiciae6d3a53f9f570,
  title = {Creating a Canonical Scientific and Technical Information Classification System for NCSTRL+},
  author = {Tiffany, Melissa E. and Nelson, Michael L.},
  year = {1998},
  url = {https://ntrs.nasa.gov/citations/19990005546},
  note = {Source identifier: 19990005546}
}