Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) MACHITANI Koji and SAKAMOTO Hidefumi and NAKAHARA Yoshio and KIMURA Keiichi,Molecular Design of Tetraazamacrocyclic Derivatives Bearing a Spirobenzopyran and Three Carboxymethyl Moieties and Their Metal-Ion Complexing Behavior,Analytical Sciences,09106340,The Japan Society for Analytical Chemistry,2008,24,4,463-469,https://cir.nii.ac.jp/crid/1390001204256199168,https://doi.org/10.2116/analsci.24.463