Retirement benefits

The search results provide good candidates for external links:

Social Security History: Multiple links from ssa.gov (³³,³²,³¹,³⁰,²⁹) confirm the Social Security Act of 1935. I'll pick one that seems most direct. ssa.gov/history/ looks like a good general history page, or ssa.gov/history/act.html for the Act itself. Let's go with https://www.ssa.gov/history/act.html as it specifically points to the original act.
ERISA: The Department of Labor website, dol.gov, has direct information. https://www.dol.gov/general/topic/retirement/erisa (²⁸,²⁷) is a perfect fit.
IRS Retirement Plans: IRS publications are ideal. Publication 560 (,²⁶,²⁵,²⁴) is frequently mentioned, which is "Retirement Plans for Small Business". https://www.irs.gov/retirement-plans/plan-sponsors/retirement-plan-forms-and-publications (²³) provides a central hub for publications, which is more general and useful than just one specific publication. Or a direct link to Publication 560 if I want to be very specific about employer plans: https://www.irs.gov/pub/irs-pdf/p560.pdf. Let's use the main forms and publications page as it covers more ground related to different plan types.
Longevity Risk: IMF (²²,²¹), Kiplinger (²⁰), Investopedia (), and Pension Research Council (¹⁹) are good. The IMF link (¹⁸,¹⁷) on "The Financial Impact of Longevity Risk" seems academic and highly relevant. https://www.imf.org/en/Publications/FM/Issues/2016/12/31/The-Financial-Impact-of-Longevity-Risk-40436 from IMF eLibrary.

Looks like I have my 4 external links from 3 different trusted domains (ssa.gov, dol.gov, irs.gov, imf.org).

Now I can proceed with writing the article.

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