\input zb-basic
\input zb-ioport
\iteman{io-port 01263273}
\itemau{Granot, Frieda; Penn, Michal}
\itemti{On the (integral) maximum two-flow in vertex and edge capacitated planar graphs.}
\itemso{Rinaldi, Giovanni (ed.) et al., Integer programming and combinatorial optimization. Proceedings of a conference held at Centro Ettore Majorana, Erice, Italy, April 29 - May 1, 1993. Louvain-la-Neuve: Librarian CORE, 235-249 (1993).}
\itemcc{}
\itemut{}
\itemli{}
\end