@misc{indiciae1314c1ae5db0,
  title = {PROPER 3C - A nucleon pion transport code},
  author = {Filippas, T. A. and Lambiotte, J. J., Jr. and Wilson, J. W.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19710015247},
  note = {Source identifier: 19710015247}
}