Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) WATANUKI Kunihiko and TODOME Sukemitsu,Colour and Oxidation State of Transition Element : Colour Change Due to the Redox of Manganese,CHEMISTRY & EDUCATION,0386-2151,The Chemical Society of Japan,1987,35,2,148-149,https://cir.nii.ac.jp/crid/1390001204307815680,https://doi.org/10.20665/kakyoshi.35.2_148