@misc{indiciae49f4913b3138,
  title = {A color image hierarchy.},
  author = {J E Switras},
  year = {1977},
  doi = {10.2466/pms.1977.45.3f.1337},
  url = {https://pubmed.ncbi.nlm.nih.gov/604921/},
  note = {Source identifier: 604921}
}