\input zb-basic
\input zb-ioport
\iteman{io-port 50000667}
\itemau{Mandl, Thomas; Womser-Hacker, Christa}
\itemti{Eigenschaften von nat\"urlichsprachlichen topics in information retrieval experimenten}
\itemso{LDV Forum 18, No. 1-2, 248-260 (2003).}
\itemcc{}
\itemut{}
\itemli{http://www.jlcl.org/2003\_Doppelheft/248-260\_Mandl\_Wormser-Hacker.pdf}
\end