%0 Conference Paper %B Paper presented at the annual meeting of American Educational Research Association %D 1999 %T Performance of the Sympson-Hetter exposure control algorithm with a polytomous item bank %A Pastor, D. A. %A Chiang, C. %A Dodd, B. G. %A Yockey, R. and %B Paper presented at the annual meeting of American Educational Research Association %C Montreal, Canada %G eng