Kang, Wensheng , Ratti, Ronald A. and Vespignani, Joaquin L. "Oil Price Shocks and Policy Uncertainty : New Evidence on the Effects of US and non-US Oil Production, No. 295," Globalization Institute Working Papers (January 2017). https://fraser.stlouisfed.org/title/9361/item/685318, accessed on December 5, 2025.