@booklet {1349, title = {Exploring the relationship between item exposure rate and test overlap rate in computerized adaptive testing (ACT Research Report series 99-5)}, year = {1999}, note = {(also National Council on Measurement in Education paper, 1999).}, address = {Iowa City IA: ACT, Inc}, author = {Chen, S-Y. and Ankenmann, R. D. and Spray, J. A.} }