United States. Department of the Treasury. "Treasury Modifies Auction Rules, October 25, 1991, Release Number nb-1519," in United States. Department of the Treasury. "Volume 311," Press Releases of the United States Department of the Treasury (October 16, 1991 - November 18, 1991) : 66-68. https://fraser.stlouisfed.org/title/6111/item/587154/toc/546266 , accessed on May 18, 2024.