1. Interaction effects in parafoveal letter recognition;Bouma;Nature, Lond.,1970
2. Recognition of forms against a complex background;Boynton;J. opt. Soc. Am.,1956
3. Perception and Communication;Broadbent,1958
4. Mapping a field of short time visual search;Ckaikin;Science, N.Y.,1962
5. In search of conspicuity;Engel;I.P.O, Annual Progress Report,1969