Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) KITANO Mitsugu and UEDA Joichi,Spectrophotometric Determination of Zinc with 4-(2-Pyridylazo) resorcinol,Nippon kagaku zassi,0369-5387,The Chemical Society of Japan,1970,91,10,983-987,https://cir.nii.ac.jp/crid/1390282680133854080,https://doi.org/10.1246/nikkashi1948.91.10_983