\input zb-basic
\input zb-ioport
\iteman{io-port 50274316}
\itemau{Yang, Jun; Zhang, Min; He, Bo; Yang, Chao}
\itemti{Bi-level programming model and hybrid genetic algorithm for flow interception problem with customer choice}
\itemso{Computers & Mathematics with Applications 57, No. 11-12, 1985-1994 (2009).}
\itemcc{}
\itemut{}
\itemli{doi:10.1016/j.camwa.2008.10.035}
\end