\input zb-basic
\input zb-ioport
\iteman{io-port 70450552}
\itemau{Kwaiter, Ghassan; Gaildrat, V\'eronique; Caubet, Ren\'e}
\itemti{Interactive constraint system for solid modeling objects}
\itemso{Symposium on Solid Modeling and Applications, 265-270 (1997).}
\itemcc{}
\itemut{}
\itemli{doi:10.1145/267734.267803}
\end