@article {454,
	title = {Incorporating randomness in the Fisher information for improving item-exposure control in CATs},
	journal = {British Journal of Mathematical and Statistical Psychology},
	volume = {61},
	year = {2008},
	pages = {493-513},
	author = {Barrada, J and Olea, J. and Ponsoda, V. and Abad, F. J.}
}
