TY - CHAP T1 - Designing optimal item pools for computerized adaptive tests with Sympson-Hetter exposure control Y1 - 2007 A1 - Gu, L. A1 - Reckase, M. D. CY - D. J. Weiss (Ed.), Proceedings of the 2007 GMAC Conference on Computerized Adaptive Testing N1 - 3 MB} ER -