%0 Journal Article %T A pair of step-climbing units for a manual wheelchair user: Passing over several steps using a pair of portable slopes: %A Mori, Yoshikazu %A Katsumura, Kaoru %A Nagase, Katsuya %J Advances in Mechanical Engineering %V 9 %N 3 %P 1 %@ 1687-8140 %D 2017-03-10 %I SAGE PublicationsSage UK: London, England %~ DeepDyve