@misc{indiciae30d68cecd9e4,
  title = {Convolutional coding techniques for data protection Progress report, Aug. 16 - Nov. 15, 1968},
  author = {Massey, J. L.},
  year = {1968},
  url = {https://ntrs.nasa.gov/citations/19690006166},
  note = {Source identifier: 19690006166}
}