\input zb-basic
\input zb-ioport
\iteman{io-port 50124679}
\itemau{Axs\"ater, Sven; Marklund, Johan}
\itemti{Optimal position-based warehouse ordering in divergent two-echelon inventory systems}
\itemso{Operations Research 56, No. 4, 976-991 (2008).}
\itemcc{}
\itemut{}
\itemli{doi:10.1287/opre.1080.0560}
\end