1. Barbero, M.I.: Gestión informatizada de bancos de ítems. In: Olea, J., Ponsoda, V., Prieto, G. (eds.) Tests Informatizados: Fundamentos y aplicaciones, pp. 63–83. Pirámide (1999)
2. Birnbaum, A.: Some latent trait models and their use in inferring an examinee’s mental ability’. In: Statistical Theories of Mental Test Scores. Addison-Wesley: Reading, MA (1968)
3. Bock R.D. (1997) The nominal categories model. In: van der Linden W.J., Hambleton R.K., (eds) Handbook of Modern Item Response Theory. Springer, Verlag New York, pp. 33–49
4. Burton, R.: Diagnosing bugs in a simple procedural skill. In: Sleeman, D., Brown, J. (eds.) Intelligent Tutoring Systems, pp. 57–183. Academic Press (1982)
5. Carver C.A., Howard R.A., Lane W.D. (1999) Enhancing student learning through hypermedia courseware and incorporation of student learning styles. IEEE Trans. Educ. 42(1):33–38