@misc{indiciae7c9586192cb2,
  title = {Convolutional coding techniques for data protection Quarterly progress report, 16 Nov. 1968 - 15 Feb. 1969},
  author = {Massey, J. L.},
  year = {1969},
  url = {https://ntrs.nasa.gov/citations/19690011548},
  note = {Source identifier: 19690011548}
}