\input zb-basic
\input zb-ioport
\iteman{io-port 50291736}
\itemau{Tian, Jin; Tian, Tian}
\itemti{Key issues of cognitive radio}
\itemso{Multiagent and Grid Systems 6, No. 4, 395-399 (2010).}
\itemcc{}
\itemut{}
\itemli{doi:10.3233/MGS-2010-0156}
\end