1. The illusory perception of movement caused by angular acceleration and centrifugal force during flight: II. Visually perceived motion of a fixed target during turns;Clark;J. Exper. Psychol.,1948
2. Clark, B., and Graybiel, A.: Linear acceleration and deceleration as factors influencing non-visual orientation during flight. Bureau Med. Res. Project X-148 (Av-4–3) Report No. 18, September 25, 1947.
3. Illusory rotation of a target during turns in an aircraft;Clark;Am. J. Psychol.,1948
4. The autokinetic illusion and its significance in night flying;Graybiel;J. Aviation Med.,1945
5. Disorientation in pilots;Graybiel;Contact,1945