1Special issue on unmanned aerial vehicles (UAVs)Kimon P.VALAVANIS812Flocking control of a fleet of unmanned aerial vehiclesAdel BELKADI, Zhixiang LIU, Laurent CIARLETTA, Youmin ZHANG, Didier THEILLIOL82-923Distributed output feedback stationary consensus of multi-vehicle systems in unknown environmentsVahid REZAEI, Margareta STEFANOVIC93-1094Consensus controller for multi-UAV navigationPatrik KOLARIC, Ci CHEN, Ankur DALAL, Frank L.LEWIS110-1215Ranging-aided relative navigation of multi-platformsHai-Long PEI, Ruican XIA122-1326Nonlinear robust control of a quadrotor helicopter with finite time convergenceGuozhou ZHENG, Bin XIAN133-1447Experimental evaluation of a real-time GPU-based pose estimation system for autonomous landing of rotary wings UAVsAlessandro BENINI, Matthew J.RUTHERFORD, Kimon P.VALAVANIS145-1598Information160,封3