@misc{indiciaec237dd3cb1bf,
  title = {A nonlinear integral equation for visual impedance.},
  author = {S M Berman and A L Stewart},
  year = {1979},
  doi = {10.1007/bf00337291},
  url = {https://pubmed.ncbi.nlm.nih.gov/497259/},
  note = {Source identifier: 497259}
}