\input zb-basic
\input zb-ioport
\iteman{io-port 70575567}
\itemau{Alagic, Suad; Bernstein, Philip A.; Jairath, Ruchi}
\itemti{Object-oriented constraints for XML schema}
\itemso{ICOODB, 100-117 (2010).}
\itemcc{}
\itemut{}
\itemli{doi:10.1007/978-3-642-16092-9\_11}
\end