TY - CONF T1 - Identifying practical indices for enhancing item pool security T2 - Paper presented at the annual meeting of the National Council on Measurement in Education (NCME) Y1 - 2005 A1 - Yi, Q. A1 - Zhang, J. A1 - Chang, Hua-Hua JF - Paper presented at the annual meeting of the National Council on Measurement in Education (NCME) CY - Montreal, Canada ER -