Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) SHIMIZU Shigeru,The Lightening of Constraction by Plastic Materials(Concerning Strength of Materials),Journal of the Society of Mechanical Engineers,00214728,The Japan Society of Mechanical Engineers,1963,66,535,1138-1143,https://cir.nii.ac.jp/crid/1390001205915990016,https://doi.org/10.1299/jsmemag.66.535_1138