\input zb-basic
\input zb-ioport
\iteman{io-port 70290081}
\itemau{Deng, Xiangzheng; Wen, Xin}
\itemti{Estimation system for land productivity}
\itemso{CSISE (2), 257-261 (2011).}
\itemcc{}
\itemut{}
\itemli{doi:10.1007/978-3-642-23756-0\_42}
\end