TY  - RPRT
TI  - Rule for obtaining 75 per cent threshold with the staircase method.
AU  - R Wales
AU  - R R Blake
PY  - 1970
DO  - 10.1364/josa.60.0284_1
UR  - https://pubmed.ncbi.nlm.nih.gov/5416053/
ID  - 5416053
ER  -