@conference {884,
	title = {Constraints-weighted information method for item selection of severely constrained computerized adaptive testing},
	booktitle = {Paper presented at the annual meeting of the National Council on Measurement in Education},
	year = {2006},
	address = {San Francisco},
	author = {Cheng, Y and Chang, Hua-Hua and Wang, X. B.}
}
@conference {1246,
	title = {Achieving accuracy of retest calibration for a national CAT placement examination with a restricted test length},
	booktitle = {Paper presented at the annual meeting of the National Council on Measurement in Education},
	year = {2004},
	note = {$\#$WA04-01 {PDF file, 837 KB}},
	address = {San Diego CA},
	author = {Wang, X. B. and Wiley, A.}
}
