@misc{indiciaeea99c5a995d9,
  title = {Computer program for symbolic reduction of block diagrams using FORMAC},
  author = {Lorenzo, C. F. and Swigert, P.},
  year = {1968},
  url = {https://ntrs.nasa.gov/citations/19680015495},
  note = {Source identifier: 19680015495}
}