@conference {836,
	title = {Comparison of the a-stratified method, the Sympson-Hetter method, and the matched difficulty method in CAT administration},
	booktitle = {Paper presented at the annual meeting of the Psychometric Society},
	year = {1999},
	note = {$\#$BA99-01},
	address = {Lawrence KS},
	author = {Ban, J and Wang, T. and Yi, Q.}
}
