1. Perception and communication.
2. Kahneman, D. (1973) Attention and Effort. Prentice-Hall, Englewood Cliffs.
3. Verbal Cues, Language, and Meaning in Selective Attention
4. Neisser, U. (1967) Cognitive Psychology. Apple-ton-Century-Crofts, New York.
5. Broadbent, D.E.J. (1971) Decision and Stress. Academic Press, London.