\input zb-basic
\input zb-ioport
\iteman{io-port 50013021}
\itemau{Cruz, Gon\c{c}alo Charters Santos; Encarna\c{c}\~ao, Pedro Miguel Martins}
\itemti{Obstacle avoidance for unmanned aerial vehicles}
\itemso{Journal of Intelligent and Robotic Systems 65, No. 1-4, 203-217 (2012).}
\itemcc{}
\itemut{}
\itemli{doi:10.1007/s10846-011-9587-z}
\end