Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Kawakami Hiromasa and Yokoyama Makoto,Control of a power steering system with a variable gear ratio,Proceedings of the Japan Joint Automatic Control Conference,,The Japan Joint Automatic Control Conference,2010,53,0,123-123,https://cir.nii.ac.jp/crid/1390282680623881344,https://doi.org/10.11511/jacc.53.0.123.0