H. Richard Blackwell

Neural theories of simple visual discriminations.

H R BLACKWELL, H. Blackwell, H. Richard Blackwell, 1963, Journal of the Optical Society of America.

Contrast thresholds of the human eye.

H R BLACKWELL, H. Blackwell, H. Richard Blackwell, 1946, Journal of the Optical Society of America.

Studies of psychophysical methods for measuring visual thresholds.

H. Blackwell, H. Richard Blackwell, 1952, Journal of the Optical Society of America.