\input zb-basic
\input zb-ioport
\iteman{io-port 50102064}
\itemau{Hwang, Gwo-Jen; Chen, Chieh-Yuan; Tsai, Pei-Shan; Tsai, Chin-Chung}
\itemti{An expert system for improving web-based problem-solving ability of students}
\itemso{Expert Syst. Appl. 38, No. 7, 8664-8672 (2011).}
\itemcc{}
\itemut{}
\itemli{doi:10.1016/j.eswa.2011.01.072}
\end