Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Okubo Hitoshi,The Development of the Electric Field Analysis and the CAE Techniques,IEEJ Transactions on Power and Energy,03854213,The Institute of Electrical Engineers of Japan,1991,111,10,1036-1039,https://cir.nii.ac.jp/crid/1390001204600848128,https://doi.org/10.1541/ieejpes1990.111.10_1036