@inbook {2055,
	title = {MATHCAT: A Flexible Testing System in Mathematics Education for Adults},
	booktitle = {Elements of Adaptive Testing},
	year = {2010},
	pages = {137-150},
	chapter = {7},
	doi = {10.1007/978-0-387-85461-8},
	author = {Verschoor, Angela J. and Straetmans, G. J. J. M.}
}
