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)
Kimihiro Nomura and Daisuke Yoshida,Past extendibility and initial singularity in Friedmann-Lemaître-Robertson-Walker and Bianchi I spacetimes,Journal of Cosmology and Astroparticle Physics,1475-7516,IOP Publishing,2021-07-01,2021,07,047,https://cir.nii.ac.jp/crid/1360576118746331648,https://doi.org/10.1088/1475-7516/2021/07/047