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)
David Lovelock,The Einstein Tensor and Its Generalizations,Journal of Mathematical Physics,0022-2488,AIP Publishing,1971-03-01,12,3,498-501,https://cir.nii.ac.jp/crid/1363951796252702592,https://doi.org/10.1063/1.1665613