Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) 山口 章三郎 and 天野 晋武 and 佐藤 貞雄,Effect of Stress Range for the Fatigue of Plastics,,0368-5098,,1972-08-15,,32,72-80,https://cir.nii.ac.jp/crid/1573950557182950272,