1. Photic driving of the critical flicker frequency;Alpern;J. opt. Soc. Am.,1961
2. Subjective brightness in relation to flash rate and the light-dark ratio;Bartley;J. exp. Psychol.,1938
3. Principles of Perception;Bartley,1969
4. Flicker and intermittent stimulation;Brown,1965
5. Über den Nutzeffekt intermittierender Netzhautreizungen;Brücke;Sitzungs. ber. K. Acad. Wiss. Wien,1864