Hetter, R. D., & Sympson, J. B.. (1997). Item exposure control in CAT-ASVAB. In J. R. McBride, Computerized adaptive testing: From inquiry to operation (pp. 141-144). Washington D.C., USA: American Psychological Association.

Sympson, J. B., & l. Hartmann,. (1982). Item Calibrations for Computerized Adaptive Testing (CAT) Experimental Item Pools Adaptive Testing. In . D. J. Weiss (Ed.). Proceedings of the 1982 Computerized Adaptive Testing Conference (pp. 290-294). Minneapolis MN: University of Minnesota, Department of Psychology, Psychometric Methods Program.