@conference {1003,
	title = {Computerized adaptive testing: A comparison of three content balancing methods},
	booktitle = {Paper presented at the annual meeting of the National Council on Measurement in Education},
	year = {2003},
	note = {{PDF file, 227 KB}},
	address = {Chicago IL},
	author = {Leung, C-K.. and Chang, Hua-Hua and Hau, K-T. and Wen. Z.}
}
