\input zb-basic \input zb-ioport \iteman{io-port 70604579} \itemau{Prendinger, Helmut; Mori, Junichiro; Ishizuka, Mitsuru} \itemti{Recognizing, modeling, and responding to users' affective states} \itemso{User Modeling, 60-69 (2005).} \itemcc{} \itemut{} \itemli{doi:10.1007/11527886\_9} \end