6Elfes A,Bueno S S, Azinheira J R. Robotic Airships for Exploration of Planetary Bodies with an Atmosphere:Autonomy Challenges [J].Autonomous Robots. 2003, 14:147-164.
7Colozza Anthony. Airships for Plane tary Explor-ation[R].NASA/CR-2004-2133 45,2004.
8Tan S B, Nagabhushan B L. Robust Hea ding-Hold Autopilot for an Advanced Air ship[R]. AIAA-97-1488, 1997.