@misc{indiciae4649acf3d0a3,
  title = {Intelligent computer-aided training and tutoring},
  author = {Loftin, R. Bowen and Savely, Robert T.},
  year = {1991},
  url = {https://ntrs.nasa.gov/citations/19910014729},
  note = {Source identifier: 19910014729}
}