@misc{indiciae160faadf9e15,
  title = {Digital image processing of vascular angiograms},
  author = {Selzer, R. H. and Blankenhorn, D. H. and Beckenbach, E. S. and Crawford, D. W. and Brooks, S. H.},
  year = {1975},
  url = {https://ntrs.nasa.gov/citations/19770009759},
  note = {Source identifier: 19770009759}
}