Arak, Marcelle, 1942-. "The Geometrically Weighted Average of Past Incomes as a Representation of Permanent Income: A Reconsideration, Research Paper no. 7513,"
Research Papers (Federal Reserve Bank of New York)
(August 4, 1975).
https://fraser.stlouisfed.org/title/6570/item/707870, accessed on January 14, 2026.