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) Nobuyuki Sakai and Misao Sasaki,Stability of Q-balls and catastrophe,Progress of theoretical physics = 理論物理学の進歩,0033068X,Kyoto : Publication Office,2008-06,119,6,929-937,https://cir.nii.ac.jp/crid/1521699229848768512,https://doi.org/10.1143/ptp.119.929