@misc{indiciaeaaf909dfdfb8,
  title = {Neutral coding - A report based on an NRP work session},
  author = {Bullock, T. H. and Perkel, D. H.},
  year = {1968},
  url = {https://ntrs.nasa.gov/citations/19690022317},
  note = {Source identifier: 19690022317}
}