Generating abstract reasoning items with cognitive theory. In , Item generation for test development (pp. 219-250). Mahwah, N.J. USA: Lawrence Erlbaum Associates, Inc.. (2002).
Computerized adaptive testing: Its potential substantive contribution to psychological research and assessment. Current Directions in Psychological Science, 1, 129-133.. (1992).
Generating items during testing: Psychometric issues and models. Psychometrika, 64, 407-433.. (1999).