Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Sakai S.,Fluxons n thin-film superconductor-insulator superlattices,J.Appl. Phys,,,1992,71,5,2411-2417,https://cir.nii.ac.jp/crid/1573387449080263168,