Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) KITAFUJI Hiroshi and KOTERA Tadashi,Interaction between self-excited and forced vibrations. 2nd report Analysis of subharmonic vibrations.,TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C,0387-5024,The Japan Society of Mechanical Engineers,1985,51,465,927-934,https://cir.nii.ac.jp/crid/1390001206357700480,https://doi.org/10.1299/kikaic.51.927