Chang, H. - H., & Zhang, J.. (2002). Identify the lower bounds for item sharing and item pooling in computerized adaptive testing. In Paper presented at the annual meeting of the American Educational Research Association. New Orleans LA.

Yi, Q., Zhang, J., & Chang, H. - H.. (2005). Identifying practical indices for enhancing item pool security. In Paper presented at the annual meeting of the National Council on Measurement in Education (NCME). Montreal, Canada.

Leung, C. - I., Chang, H. - H., & Hau, K. - T.. (2001). Integrating stratification and information approaches for multiple constrained CAT. In Paper presented at the Annual Meeting of the National Council on Measurement in Education. Seattle WA.

Leung, C. - K., Chang, H. - H., & Hau, K. - T.. (1999). Item selection in computerized adaptive testing: improving the a-stratified design with the Sympson-Hetter algorithm. In Paper presented at the Annual Meeting of the American Educational Research Association. Montreal, CA.

Hau, K. T., & Chang, H. - H.. (1998). Item selection in computerized adaptive testing: Should more discriminating items be used first? Paper presented at the annual meeting of the American Educational Research Association, San Diego, CA. In .

van der Linden, W. J., & Chang, H. - H.. (2003). Implementing content constraints in alpha-stratified adaptive testing using a shadow test approach. Applied Psychological Measurement, 27, 107-120.

Leung, C. - K., Chang, H. - H., & Hau, K. - T.. (2003). Incorporation Of Content Balancing Requirements In Stratification Designs For Computerized Adaptive Testing. Educational and Psychological Measurement, 63, 257-270. doi:10.1177/0013164403251326

Leung, C. - K., Chang, H. - H., & Hau, K. - T.. (2003). Incorporation of Content Balancing Requirements in Stratification Designs for Computerized Adaptive Testing. Educational and Psychological Measurement, 63, 257-70.

Leung, C. K., Chang, H. - H., & Hau, K. T.. (2002). Item selection in computerized adaptive testing: Improving the a-stratified design with the Sympson-Hetter algorithm. Applied Psychological Measurement, 26, 376-392.

Leung, C. - K., Chang, H. - H., & Hau, K. - T.. (2002). Item selection in computerized adaptive testing: Improving the a-stratified design with the Sympson-Hetter algorithm. Applied Psychological Measurement, 26, 376-392.

Hau, K. T., & Chang, H. - H.. (1998). Item selection in computerized adaptive testing: Should more discriminating items be used first?. Journal of Educational Measurement, 38, 249-266.

Hau, K. - T., & Chang, H. - H.. (2001). Item selection in computerized adaptive testing: Should more discriminating items be used first?. Journal of Educational Measurement, 38, 249-266.

van der Linden, W. J., & Chang, H. - H.. (2005). Implementing content constraints in alpha-stratified adaptive testing using a shadow test approach. Law School Admission Council, Computerized Testing Report 01-09.

Chang, H. - H., & van der Linden, W. J.. (2001). Implementing content constraints in a-stratified adaptive testing using a shadow test approach (Research Report 01-001). University of Twente, Department of Educational Measurement and Data Analysis.