%0 Journal Article %T Two Applications of a Critical-Instability Task to Secondary Work Load Research %A Jex, H.R. %A , %J IEEE Transactions on Human Factors in Electronics %V HFE-8 %N 4 %P 279-282 %@ 0096-249X %D 1967-12-01 %I Institute of Electrical and Electronics Engineers (IEEE) %~ DeepDyve