@misc{indiciaeba3f643e5820,
  title = {Where is the gray line?},
  author = {A E Wulc and R M Dryden and T Khatchaturian},
  year = {1987},
  doi = {10.1001/archopht.1987.01060080094035},
  url = {https://pubmed.ncbi.nlm.nih.gov/3632419/},
  note = {Source identifier: 3632419}
}