\input zb-basic
\input zb-ioport
\iteman{io-port 50190962}
\itemau{Kornatzky, Yoram; Shimony, Solomon Eyal}
\itemti{A probabilistic object-oriented data model}
\itemso{Data Knowl. Eng. 12, No. 2, 143-166 (1994).}
\itemcc{}
\itemut{}
\itemli{doi:10.1016/0169-023X(94)90012-4}
\end