@misc{indiciaec9872222adab,
  title = {A method for modulation transfer function determination from edge profiles with correction for finite-element differentiation.},
  author = {I A Cunningham and A Fenster},
  doi = {10.1118/1.596064},
  url = {https://pubmed.ncbi.nlm.nih.gov/3626992/},
  note = {Source identifier: 3626992}
}