1. Demographic and economic characteristics of the aged;Bixby,1975
2. Board of Trustees of the Federal Old-Age and Survivors Insurance and Disability Insurance Trust Funds, Annual Report (U.S. Government Printing Office, Washington).
3. Internal rates of return to retired worker-only beneficiaries under social security, 1967–1970;Frieden,1976
4. Limited knowledge and insurance protection: Implications for natural hazard policy;Kunreuther;Report to NSF–RANN,1977