Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) SHIELD R. T.,Design of Thin-Walled Torispherical and Toriconical Pressure-Vessel Heads,J. Applied Mechanics,,,1961,28,2,292-297,https://cir.nii.ac.jp/crid/1574231875638942464,