Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Hongyu Wang and Masaki Yoshio and Arjun Kumar Thapa and Hiroyoshi Nakamura,"From symmetric AC/AC to asymmetric AC/graphite, a progress in electrochemical capacitors",Journal of Power Sources,0378-7753,Elsevier BV,2007-06,169,2,375-380,https://cir.nii.ac.jp/crid/1362544419355795328,https://doi.org/10.1016/j.jpowsour.2007.02.088