Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) SAKASHITA Yoshihiro and OHSHIRO Seisaku and UEDA Michihiko and IWASAKI Mitsunobu and TADA Hiroaki and ITO Seishiro,Anodic Oxidation and Electrolytic Coloring of Aluminum Using Cu (II) Electrolyte by Hybrid Bath Process,Journal of the Japan Society of Colour Material,0010180X,Japan Society of Colour Material,1998,71,6,367-374,https://cir.nii.ac.jp/crid/1390001205469844096,https://doi.org/10.4011/shikizai1937.71.367