POULTON, E C Value of standard and very first variable in judgments of reflectance of grays with various ranges of available numbers. [electronic resource] - Journal of experimental psychology Mar 1963 - 297-304 p. digital Publication Type: Journal Article ISSN: 0022-1015 Standard No.: 10.1037/h0047585 doi Subjects--Topical Terms: HumansJudgmentVisual Perception