@conference {1087,
	title = {Performance of the Sympson-Hetter exposure control algorithm with a polytomous item bank},
	booktitle = {Paper presented at the annual meeting of American Educational Research Association},
	year = {1999},
	address = {Montreal, Canada},
	author = {Pastor, D. A. and Chiang, C. and Dodd, B. G. and Yockey, R. and}
}
