@inbook {1731,
	title = {Test overlap rate and item exposure rate as indicators of test security in CATs},
	year = {2009},
	note = {PDF File, 261 K},
	address = {D. J. Weiss (Ed.), Proceedings of the 2009 GMAC Conference on Computerized Adaptive Testing.},
	author = {Barrada, J and Olea, J. and Ponsoda, V. and Abad, F. J.}
}
