FriWalk robotic walker: usability, acceptance and UX evaluation after a pilot study in a real environment - Perez-Rodriguez, Rodrigo; Moreno-Sanchez, Pedro A.; Valdes-Aragones, Myriam; Oviedo-Briones, Myriam; Divan, Stefano; Garcia-Grossocordon, Nuria; Rodriguez-Manas, Leocadio (Disability And Rehabilitation: Assistive Technology, 2020)