@article{oai:kwansei.repo.nii.ac.jp:00027683,
 author = {安岡, 匡也 and Yasuoka, Masaya},
 issue = {4},
 journal = {経済学論究, The journal of economics of Kwansei Gakuin University},
 month = {Mar},
 pages = {41--51},
 title = {Endogenous Fertility and Pension System},
 volume = {72},
 year = {2019}
}