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) Shintaro Akamine and Atsufumi Honda and Masaaki Umehara and Kotaro Yamada,Null hypersurfaces in Lorentzian manifolds with the null energy condition,Journal of Geometry and Physics,0393-0440,Elsevier BV,2020-09,155,,103751,https://cir.nii.ac.jp/crid/1361131416790181632,https://doi.org/10.1016/j.geomphys.2020.103751