Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Seiichiro Katsura and Shutaro Yorozu,Bilateral control of 3-mass resonant system based on resonance ratio control,2011 IEEE International Conference on Industrial Technology,,IEEE,2011-03-01,,,381-386,https://cir.nii.ac.jp/crid/1870865117477265024,https://doi.org/10.1109/icit.2011.5754407