Empowering lower limbs exoskeletons: state-of-the-art. - Slavka Viteckova; Patrik Kutilek; Gérard de Boisboissel; Radim Krupicka; Alena Galajdová; Jan Kauler; Lenka Lhotská; Zoltán Szabó 006 (Robotica, 2018)