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 "Lerman, L. M. (Lev M.) and Umanskiy, Yan L.",Four-dimensional integrable Hamiltonian systems with simple singular points (topological aspects),,American Mathematical Society,1998,Translations of mathematical monographs,,0821803751,,https://cir.nii.ac.jp/crid/1130000794069140352