Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL
"南條, 善治 and 小林, 和正",Method of computing the expectation of life at old age on the basis of the principle of agreement with data,,Nihon University Population Research Institute,1987,NUPRI research paper series,,,,https://cir.nii.ac.jp/crid/1130000798385926144