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) Huaitang Chen and Hongquing Zhang,New Double Periodic Solutions for a Kind of Nonlinear Wave Equation,Progress of theoretical physics = 理論物理学の進歩,0033068X,Kyoto : Publication Office,2003-05,109,5,709-716,https://cir.nii.ac.jp/crid/1522262179597081856,https://doi.org/10.1143/ptp.109.709