Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) KATOH Koichi,The absorption spectra of acid-base indicators in the mixed solvents,BUNSEKI KAGAKU,05251931,The Japan Society for Analytical Chemistry,1966,15,3,241-246,https://cir.nii.ac.jp/crid/1390282679330830720,https://doi.org/10.2116/bunsekikagaku.15.241