@inbook {1894,
	title = {Up-and-down procedures for approximating optimal designs using person-response functions},
	year = {2007},
	note = {{PDF file, 1,042 KB}},
	address = {D. J. Weiss (Ed.). Proceedings of the 2007 GMAC Conference on Computerized Adaptive Testing.},
	author = {Sheng, Y. and Flournoy, N. and Osterlind, S. J.}
}
