Hallman, Jeffrey J., 1957- and Bryden, Edward J. "Commodity Prices and P-Star," in Federal Reserve Bank of Cleveland. "1992 Quarter 1, Vol. 28, No. 1," Economic Review (Federal Reserve Bank of Cleveland) (1992 Quarter 1) : 12-18. https://fraser.stlouisfed.org/title/1328/item/4547/toc/151798 , accessed on May 3, 2024.