@misc{indiciaef47e1d1fd16e,
  title = {Medullary rays. Visualization during excretory urography.},
  author = {L R Bigongiari and S K Patel and H Appelman and J R Thornbury},
  year = {1975},
  doi = {10.2214/ajr.125.4.795},
  url = {https://pubmed.ncbi.nlm.nih.gov/1211509/},
  note = {Source identifier: 1211509}
}