@article {250,
	title = {Incorporation of Content Balancing Requirements in Stratification Designs for Computerized Adaptive Testing},
	journal = {Educational and Psychological Measurement},
	volume = {63},
	number = {2},
	year = {2003},
	pages = {257-70},
	abstract = {Studied three stratification designs for computerized adaptive testing in conjunction with three well-developed content balancing methods. Simulation study results show substantial differences in item overlap rate and pool utilization among different methods. Recommends an optimal combination of stratification design and content balancing method. (SLD)},
	keywords = {computerized adaptive testing},
	author = {Leung, C-K.. and Chang, Hua-Hua and Hau, K-T.}
}
@article {612,
	title = {Item selection in computerized adaptive testing: Improving the a-stratified design with the Sympson-Hetter algorithm},
	journal = {Applied Psychological Measurement},
	volume = {26},
	year = {2002},
	pages = {376-392},
	author = {Leung, C-K.. and Chang, Hua-Hua and Hau, K-T.}
}
@conference {997,
	title = {Item selection in computerized adaptive testing: improving the a-stratified design with the Sympson-Hetter algorithm},
	booktitle = {Paper presented at the Annual Meeting of the American Educational Research Association},
	year = {1999},
	address = {Montreal, CA},
	author = {Leung, C-K.. and Chang, Hua-Hua and Hau, K-T.}
}
