TY  - RPRT
TI  - Gaussian bars and rectangular bars: the influence of width and gradient on visibility.
AU  - R Shapley
PY  - 1974
DO  - 10.1016/0042-6989(74)90021-2
UR  - https://pubmed.ncbi.nlm.nih.gov/4446376/
ID  - 4446376
ER  -