References


          Krueger, L. E. (1972) Perceived numerosity. Perception and Psychophysics, 11, 5-9.

          Krueger, L. E. (1982) Single judgments of numerosity. Perception and Psychophysics, 31, (2) 175-182.

          Krueger, L. E. (1984) Perceived numerosity: A comparison of magnitude production, magnitude estimation, and discrimination judgments. Perception and Psychophysics, 35, (6) 536-542.