@misc{indiciae6c2bd769828d,
  title = {Spherical shadows within the maxillary antrium.},
  author = {G E Lilly and J L Cutcher and M Steiner},
  year = {1968},
  url = {https://pubmed.ncbi.nlm.nih.gov/5238722/},
  note = {Source identifier: 5238722}
}