著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) Liu Deming and Okamoto Kazuo,Polynomial Hamiltonian structure for the A_3 system,Kumamoto journal of mathematics,0914675X,熊本大学,1997-03,10,,31-43,https://cir.nii.ac.jp/crid/1574231876642548096,