@conference {998,
	title = {Content balancing in stratified computerized adaptive testing designs},
	booktitle = {Paper presented at the annual meeting of the American Educational Research Association},
	year = {2000},
	note = {{PDF file, 427 KB}},
	address = {New Orleans, LA},
	author = {Leung, C-K.. and Chang, Hua-Hua and Hau, K-T.}
}
