@misc{indiciaea18b99f5c6e6,
  title = {Boundary-detection algorithm for locating edges in digital imagery},
  author = {Myers, V. I. and Russell, M. J. and Moore, D. G. and Nelson, G. D.},
  year = {1975},
  url = {https://ntrs.nasa.gov/citations/19760010365},
  note = {Source identifier: 19760010365}
}