\input zb-basic
\input zb-ioport
\iteman{io-port 70044980}
\itemau{Wuersch, Markus; Caduff, David}
\itemti{Refined route instructions using topological stages of closeness}
\itemso{W2GIS, 31-41 (2005).}
\itemcc{}
\itemut{}
\itemli{doi:10.1007/11599289\_4}
\end