著者名,タイトル,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) Miller JM,Dependence of the input impedance of a three‐electrode vacuum tube upon the load in the plate circuit,Sci Pap Bureau Standards,,,1920,15,351,367,https://cir.nii.ac.jp/crid/1370290617759320456,