@misc{indiciaeb7cd1b6e79e6,
  title = {Strengthened lower bound on definite decoding minimum distance for periodic convolutional codes},
  author = {Costello, D. J., Jr. and Morrissey, T. N., Jr.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19710045061},
  note = {Source identifier: 19710045061}
}