United States. President and Council of Economic Advisers (U.S.). "Chain-Type Price Indexes for Gross Domestic Product," in United States. President and Council of Economic Advisers (U.S.). "2003," Economic Report of the President (2003) : 279-280. https://fraser.stlouisfed.org/title/45/item/8102/toc/278901 , accessed on April 25, 2024.