@conference {1021,
	title = {Impact of item location effects on ability estimation in CAT},
	booktitle = {Paper presented at the annual meeting of the National Council on Measurement in Education},
	year = {2001},
	note = {$\#$LI01-01},
	address = {Seattle WA},
	author = {Liu, M. and Zhu, R. and Guo, F.}
}
@conference {1020,
	title = {Impact of flawed items on ability estimation in CAT},
	booktitle = {Paper presented at the annual meeting of the National Council on Measurement in Education},
	year = {1999},
	note = {$\#$LI99-01},
	address = {Montreal, Canada},
	author = {Liu, M. and Steffen, M.}
}
@conference {1182,
	title = {Evaluation of methods for the use of underutilized items in a CAT environment},
	booktitle = {Paper presented at the annual meeting of the Psychometric Society},
	year = {1998},
	address = {Urbana, IL},
	author = {Steffen, M. and Liu, M.}
}
@conference {1019,
	title = {The impact of scoring flawed items on ability estimation in CAT},
	booktitle = {Paper presented at the annual meeting of the Psychometric Society},
	year = {1998},
	address = {Urbana, IL},
	author = {Liu, M. and Steffen, M.}
}
