Liu, Zheng
, Spiegel, Mark M.
and Wang, Bing. "Global Aging: More Headwinds for U.S. Stocks?, 2014-38,"
Economic Letter (Federal Reserve Bank of San Francisco)
(December 22, 2014).
https://fraser.stlouisfed.org/title/4960/item/633645, accessed on June 11, 2025.