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
"Synge, J. L. (John Lighton)",Principal null-directions defined in space-time by an electromagnetic field,,The University of Toronto Press,1935,University of Toronto studies. Applied mathematics series,,,,https://cir.nii.ac.jp/crid/1130000797079193856