@misc{indiciae46be90bf96f4,
  title = {Exact determination of probability of bit error for perfect single error correcting codes},
  author = {Apple, G. G. and Wintz, P. A.},
  year = {1970},
  url = {https://ntrs.nasa.gov/citations/19700050131},
  note = {Source identifier: 19700050131}
}