Cohen, G. (1990). «Why is it difficult to put names to faces?» British Journal of Psychology, 81 (pp. 287–297).
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Bouwer, G. H., Clark, M. C., Lesgold, A. M. & Winzez, D. (1969). «Hierarchical retrieval schemes in recall of categorical word lists», Journal of Verbal Learning and Verbal Behaviour, 8 (pp. 323–343).