Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) KUZUHARA Sadao,"Falling, Rolling or Sliding of Gravel in Rest Water in a Vertical or Inclined Smooth Pipe",Transactions of the Japan Society of Mechanical Engineers,00290270,The Japan Society of Mechanical Engineers,1964,30,213,594-597,https://cir.nii.ac.jp/crid/1390001205157626880,https://doi.org/10.1299/kikai1938.30.594