@booklet {1541,
	title = {Person fit based on statistical process control in an adaptive testing environment (Research Report 98-13)},
	year = {1998},
	address = {Enschede, The Netherlands: University of Twente, Faculty of Educational Science and Technology, Department of Measurement and Data Analysis},
	author = {van Krimpen-Stoop, E. M. L. A. and Meijer, R. R.}
}
