Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Kamigaito Naoya and Kamishima Kenji and Kakizaki Koichi and Hiratsuka Nobuyuki,Thermoelectric Property of Sr and Cu Substituted Ca3Co4O9+.DELTA.,Journal of the Japan Society of Powder and Powder Metallurgy,05328799,Japan Society of Powder and Powder Metallurgy,2010,57,4,237-241,https://cir.nii.ac.jp/crid/1390001206306948224,https://doi.org/10.2497/jjspm.57.237