Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) AIZAKI M.,Applications of Carlson's trophic state index to Japanese lakes and relationships between the index and other parameters,Int. Ver. Theor. Angew. Limmol. Verh.,,,1981,21,,675-681,https://cir.nii.ac.jp/crid/1572543024605566976,