TY - CONF T1 - Multi-stage CAT with stratified design T2 - Paper presented at the annual meeting of the Psychometric Society. Gatlinburg TN. Y1 - 1997 A1 - Chang, Hua-Hua A1 - Ying, Z. JF - Paper presented at the annual meeting of the Psychometric Society. Gatlinburg TN. ER -