Social security - Finance.

Public Economics in Action = The Basic Income/Flat Tax Proposal by: (書目-電子資源)

Social Security, Demographics, and Risk by: (書目-電子資源)

Public Finance & Economics.

Economics/Management Science.

Social choice.

Flat-rate income tax.

Income tax.

Older people- Economic conditions.

Guaranteed annual income.

Social security- Finance.

Social Policy.

Population Economics.