\input zb-basic
\input zb-ioport
\iteman{io-port 70656378}
\itemau{Chaudhuri, Surajit; Gravano, Luis}
\itemti{Evaluating top-$k$ selection queries}
\itemso{VLDB, 397-410 (1999).}
\itemcc{}
\itemut{}
\itemli{}
\end