Ravikumar, B. , Shao, Lin and Sposi, Michael J. "Why Was the Decline in U.S. Trade Larger This Time? : A Global View," in Federal Reserve Bank of St. Louis. "October 2013, Vol. 21, No. 4," Regional Economist : A Quarterly Review of Business and Economic Conditions (October 2013) : 12-13. https://fraser.stlouisfed.org/title/6275/item/601855/toc/584794 , accessed on May 3, 2024.