@article {657,
	title = {Item exposure control in computer-adaptive testing: The use of freezing to augment stratification},
	journal = {Florida Journal of Educational Research},
	volume = {40},
	year = {2000},
	pages = {28-52},
	author = {Parshall, C. and Harmes, J. C. and Kromrey, J. D.}
}
