@misc{indiciae5754a1f633df,
  title = {Noise cleaning in binary-valued digital pictures using 'propagation' processes},
  author = {Park, C. M. and Rosenfeld, A. and Strong, J. P.},
  year = {1969},
  url = {https://ntrs.nasa.gov/citations/19710004025},
  note = {Source identifier: 19710004025}
}