@misc{indiciae1843d3e411e4,
  title = {Research in advanced formal theorem-proving techniques},
  author = {Raphael, B. and Fikes, R. and Waldinger, R.},
  year = {1973},
  url = {https://ntrs.nasa.gov/citations/19740002065},
  note = {Source identifier: 19740002065}
}