\input zb-basic
\input zb-ioport
\iteman{io-port 50203284}
\itemau{Li, Shao Yong; Li, Zhi Wu; Hu, He Suan}
\itemti{Siphon extraction for deadlock control in flexible manufacturing systems by using Petri nets}
\itemso{Int. J. Computer Integrated Manufacturing 24, No. 8, 710-725 (2011).}
\itemcc{}
\itemut{}
\itemli{doi:10.1080/0951192X.2011.575182}
\end