Veldkamp, B. P., van der Linden, W. J., & Ariel, A.. (2002). Mathematical-programming approaches to test item pool design (No. RR 02-09) (pp. 93-108). Twente, The Netherlands: University of Twente, Faculty of Educational Science and Technology.

Veldkamp, B. P., van der Linden, W. J., & Ariel, A.. (2002). Mathematical-programming approaches to test item pool design (No. RR 02-09) (pp. 93-108). Twente, The Netherlands: University of Twente, Faculty of Educational Science and Technology.

Veldkamp, B. P., Verschoor, A. J., & Eggen, T.. (2007). A multiple objective test assembly approach for exposure control problems in computerized adaptive testing (No. 2007-1). Measurement and Research Department Reports. Arnhem, The Netherlands: Cito.

Veldkamp, B. P., Verschoor, A. J., & Eggen, T.. (2007). A multiple objective test assembly approach for exposure control problems in computerized adaptive testing (No. 2007-1). Measurement and Research Department Reports. Arnhem, The Netherlands: Cito.