\input zb-basic
\input zb-ioport
\iteman{io-port 05393582}
\itemau{Felten, Edward W.}
\itemti{A skeptical view of DRM and fair use.}
\itemso{Commun. ACM 46, No. 4, 56-59 (2003).}
\itemcc{}
\itemut{}
\itemli{doi:10.1145/641205.641232}
\end