@misc{indiciaee9291f39b6b8,
  title = {Visual sensitivity to spatially sampled modulation in human observers},
  author = {Mulligan, Jeffrey B. and Macleod, Donald I. A.},
  year = {1991},
  url = {https://ntrs.nasa.gov/citations/19910051320},
  note = {Source identifier: 19910051320}
}