@article{oai:waseda.repo.nii.ac.jp:00013779,
 author = {Ezawa, Masahiko and 江澤, 雅彦},
 journal = {産業経営},
 month = {Dec},
 pages = {1--17},
 title = {生命保険市場の環境変化と契約者利益},
 volume = {25},
 year = {1998}
}