\input zb-basic
\input zb-ioport
\iteman{io-port 71021651}
\itemau{Kranakis, Evangelos; Penna, Paolo; Schlude, Konrad; Taylor, David Scot; Widmayer, Peter}
\itemti{Improving customer proximity to railway stations}
\itemso{CIAC, 264-276 (2003).}
\itemcc{}
\itemut{}
\itemli{doi:10.1007/3-540-44849-7\_30}
\end