@inbook {1980,
	title = {A Multivariate Model Sampling Procedure and a Method of Multidimensional Tailored Testing},
	year = {1977},
	address = {D. J. Weiss (Ed.), Proceedings of the 1977 Computerized Adaptive Testing Conference. Minneapolis MN: University of Minnesota, Department of Psychology, Psychometric Methods Program.},
	author = {Urry, V. W.}
}
