1. Slips of the tongue and slips of the pen;Aitchison,1982
2. Allerbeck, M. (2000). Phonologische Paraphasien bei Wernicke-Aphasikern. Unpublished M.A. thesis, University of Bielefeld, Germany.
3. On perseveration in aphasics;Allison;Brain,1967
4. Linguistic representations: Structural analogy and stratification;Anderson,1992
5. Phonological transformations in Spanish-speaking aphasics;Ardila;Journal of Psycholinguistic Research,1989