@inbook {1754,
	title = {Partial order knowledge structures for CAT applications},
	year = {2007},
	note = {{PDF file, 475 KB}},
	address = {D. J. Weiss (Ed.), Proceedings of the 2007 GMAC Conference on Computerized Adaptive Testing.},
	author = {Desmarais, M. C. and Pu, X, and Blais, J-G.}
}
