\input zb-basic
\input zb-ioport
\iteman{io-port 70828377}
\itemau{Hartig, Olaf; Zhao, Jun}
\itemti{Using web data provenance for quality assessment}
\itemso{SWPM (2009).}
\itemcc{}
\itemut{}
\itemli{http://ceur-ws.org/Vol-526/paper\_1.pdf}
\end