@misc{indiciae8532314f424c,
  title = {An Expert-System Engine With Operative Probabilities},
  author = {Orlando, N. E. and Palmer, M. T. and Wallace, R. S.},
  year = {1986},
  url = {https://ntrs.nasa.gov/citations/19860000252},
  note = {Source identifier: 19860000252}
}