Board of Governors of the Federal Reserve System (U.S.), 1935-. "Modification to private-sector adjustment factor for priced services calculations : Attachment 1" in Press Releases of the Board of Governors of the Federal Reserve System
(October 10, 2001).
https://fraser.stlouisfed.org/title/9237/item/674926/content/pdf/frsbog_pr_20011010-1, accessed on August 9, 2026.