Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) TANAKA Y. and KITAHAMA Y.,On Stability of Varying Capacity L-C Circuit (Con- sideration from the Point of View of Periodically Inter rupted Circuits),The Journal of the Institute of Electrical Engineers of Japan,0020-2878,The Institute of Electrical Engineers of Japan,1953,73,777,559-562,https://cir.nii.ac.jp/crid/1390282680121023488,https://doi.org/10.11526/ieejjournal1888.73.559