@conference {1003, title = {Computerized adaptive testing: A comparison of three content balancing methods}, booktitle = {Paper presented at the annual meeting of the National Council on Measurement in Education}, year = {2003}, note = {{PDF file, 227 KB}}, address = {Chicago IL}, author = {Leung, C-K.. and Chang, Hua-Hua and Hau, K-T. and Wen. Z.} }