Barchan J. (1987). Language Independent Grammatical Error Reporter. M.Phil. thesis, University of Exeter
Barchan, J., Woodmansee, B.J. and Yazdani, M. (1986). A PROLOG-based Tool for French Grammar Analysis. Instructional Science, 14, 21–48.
Chomsky, N. (1956). Syntactic Structures. Mouton, The Hague.
Imlah, W. and du, Boulay, B. (1985). Robust Natural Language Parsing in Computer Assisted Language Instruction, System, 13, 137–147.
O'Brien, P. and Yazdani, M. (1988). “eL: A Prototype Tutoring System for English Grammar (Error Detector and Corrector)”. The Proceedings of the Third International Symposium on Computer and Information Sciences, New York, NOVA Science Publishers, Inc
Pereira, F. and Warren, D. (1980). Definite Clause Grammar for Language Analysis. Artificial Intelligence, 13(2), 231–278.
Uren J. (1988). “Teaching Strategies: Languages and LINGER”. University of Exeter, mimeo.
Yazdani, M. (1987). Artificial Intelligence for Tutoring. In Tutoring and Monitoring Facilities for European Open Learning, pp. 239–248 (ed. J., Whiting and D.A., Bell), Amsterdam: North-Holland