id: 50011731 dt: j an: 50011731 au: Shin, Jinok; Ji, Sanki; Shon, Woonghee; Lee, Hogil; Cho, Kuk; Park, Sangdeok ti: Indoor hovering control of small ducted-fan type OAV using ultrasonic positioning system so: Journal of Intelligent and Robotic Systems 61, No. 1-4, 15-27 (2011). py: 2011 pu: la: EN cc: ut: ci: li: doi:10.1007/s10846-010-9488-6