Iterative Design of an Upper Limb Rehabilitation Game with Tangible Robots. - Arzu Guneysu Ozgur; Maximilian Jonas Wessel; Wafa Johal; Kshitij Sharma; Ayberk Özgür; Philippe Vuadens; Francesco Mondada; Friedhelm Christoph Hummel; Pierre Dillenbourg (HRI, 2018)