Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) TAMURA Akiyoshi and TANIGUCHI Osamu,"Ball Bearing Vibrations : 2nd Report, On the Subharmonic Vibration of Order 1/2 Caused by the Passing Balls",Transactions of the Japan Society of Mechanical Engineers,00290270,The Japan Society of Mechanical Engineers,1960,26,167,877-883,https://cir.nii.ac.jp/crid/1390282680131890816,https://doi.org/10.1299/kikai1938.26.877