Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) ISHIGURO K.,Identification and characterization of foliar polyphenolic composition in sweetpotato (Ipomoea batatas L.) genotype,J. Agric. Food Chem.,,,2002,50,,3718-3722,https://cir.nii.ac.jp/crid/1573387450551794688,