Multimodal Aerial Locomotion: An Approach to Active Tool Handling. - Han W. Wopereis; Wilbert L. W. van de Ridder; Tom J. W. Lankhorst; Lucian Klooster; Evyatar M. Bukai; David Wuthier; George Nikolakopoulos; Stefano Stramigioli; Johan B. C. Engelen; Matteo Fumagalli 001 (IEEE Robotics Autom. Mag., 2018)