HArCo: Hierarchical Fiducial Markers for Pose Estimation in Helicopter Landing Tasks. - Hao Wang 052; Xiongfeng Wang; Geng Lu; Yisheng Zhong (SMC, 2015)

Robust output feedback finite-horizon optimal control for landing unmanned quadrotors on a slope. - Hao Wang 052; Geng Lu; Zongying Shi; Yisheng Zhong (ACC, 2017)

Hierarchical fiducial marker design for pose estimation in large-scale scenarios. - Hao Wang 052; Zongying Shi; Geng Lu; Yisheng Zhong (J. Field Robotics, 2018)