著者名,書名,版表示,出版者名,出版年,シリーズ名,番号,ISBN,ISSN,URL "Riahi, Hasna",Study of the critical points at infinity arising from the failure of the Palais-Smale condition for n-body type problems,,American Mathematical Society,1999,Memoirs of the American Mathematical Society,,0821808737,,https://cir.nii.ac.jp/crid/1130282270167200256