Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) ARAKI CKA,Studies on the chemical constitution of agar-agar : XX. Isolation of a tetrasaccharide by enzymatic hydrolysis of agar-agar,Bull Chem Soc Jpn,,,1957,30,,287-293,https://cir.nii.ac.jp/crid/1573668924093658240,