Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI)
Hiroumi Koichi,Mechanism of Insurance and Theory of Insurance,一橋論叢,0018-2818,日本評論社,1965-09-01,54,3,267-284,https://cir.nii.ac.jp/crid/1390572174817505792,https://doi.org/10.15057/2964