1. Allport, D. A.: 1980, ?Patterns and actions: cognitive mechanisms are content-specific?, in G.Claxton (ed.):Cognitive Psychology: New Directions, Routledge and Kegan Paul, London, pp. 26?64.
2. Anderson, J. R. and Bower, G. H.: 1973,Human Associative Memory, Wiley, Halstead Press.
3. Ausubel, D. P.: 1968,Educational Psychology: A Cognitive View, Holt, Rinehart and Winston, pp. 113?114.
4. Ausubel, D. P.: 1971, ?Some psychological and educational limitations of learning by discovery?, in D. B. Aichele and R. E. Reyes (eds.):Reading in Secondary School Mathematics, Prindle, Weber and Schmidt, pp. 193?209.
5. Baddeley, A. D.: 1976,The Psychology of Memory, Basic Books.