@misc{indiciae46e0ef74ef4c,
  title = {Automated IDEF3 and IDEF4 systems design specification document},
  author = {Friel, Patricia Griffith and Blinn, Thomas M.},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19910023489},
  note = {Source identifier: 19910023489}
}