1. Photic driving of the critical flicker frequency;Alpern;J. opt. soc. Am.,1961
2. Neural theories of simple visual discriminations;Blackwell;J. opt. soc. Am.,1963
3. The Measurement and Prediction of Judgement and Choice;Bock,1968
4. Perceptive systems mediating certain light reactions of the pupil of the human eye;Bouma;Philips Res. Rep.,1965
5. The flickering of sources of electric light;Bouma;Philips Techn. Rev.,1941