@misc{indiciae4b965f0e04f3,
  title = {An intelligent tutoring system for space shuttle diagnosis},
  author = {Johnson, William B. and Norton, Jeffrey E. and Duncan, Phillip C.},
  year = {1988},
  url = {https://ntrs.nasa.gov/citations/19890010482},
  note = {Source identifier: 19890010482}
}