1. ACT (1993). COMPASS user guide. Iowa City, IA: American College Testing.
2. Adema, J. J. (1990a). The construction of customized two-staged tests. Journal of Educational Measurement, 27, 241–253.
3. Adema, J. J. (1990b). Models and algorithms for the construction of achievement tests. Unpublished doctoral thesis, University of Twente, Enschede, The Netherlands.
4. Adema, J. J. (1992). Methods and models for the construction of weakly parallel tests. Applied Psychological Measurement, 16, 53–63.
5. Adema, J. J., & van der Linden, W. J. (1989). Algorithms for computerized test construction using classical item parameters. Journal of Educational Statistics, 14, 279–290.