Abad, F. J., Olea, J., Aguado, D., Ponsoda, V., & Barrada, J. R..  (2010).  Deterioro de parámetros de los ítems en tests adaptativos informatizados: estudio con eCAT [Item parameter drift in computerized adaptive testing: Study with eCAT]. Psicothema, 22, 340-7.

Barrada, J. R., Olea, J., & Abad, F. J..  (2008).  Rotating item banks versus restriction of maximum exposure rates in computerized adaptive testing. Spanish Journal of Psychology, 11, 618-625.

Barrada, J. R., Mazuela, P., & Olea, J..  (2006).  Maximum information stratification method for controlling item exposure in computerized adaptive testing. Psicothema, 18, 156-159. presented at the Feb.