PT Unknown AU Albers, A Trautmann, S Howard, T Nguyen, TA Frietsch, M Sauter, C TI Semi-autonomous flying robot for physical interaction SE IEEE Conference on Robotics Automation and Mechatronics (RAM’10), Singapore, June 28-30, 2010 PY 2010 BP 441 EP 446 DI 10.1109/RAMECH.2010.5513152 LA english ER