@conference {989,
	title = {Calibrating CAT pools and online pretest items using nonparametric and adjusted marginal maximum likelihood methods},
	booktitle = {Paper presented at the annual meeting of the National Council on Measurement in Education},
	year = {2003},
	note = {PDF file, 128 K},
	address = {Chicago IL},
	author = {Krass, I. A. and Williams, B.}
}
@conference {986,
	title = {Change in distribution of latent ability with item position in CAT sequence},
	booktitle = {Paper presented at the annual meeting of the National Council on Measurement in Education in New Orleans},
	year = {2000},
	note = {{PDF file, 103 KB}},
	address = {LA},
	author = {Krass, I. A.}
}
