Federal Reserve Bank of San Francisco. "Sentiments and Economic Activity : Working Paper 2016-19 : Evidence from U.S. States, Working Paper 2016-19" in Working Papers (Federal Reserve Bank of San Francisco) (October 3, 2017). https://fraser.stlouisfed.org/title/7038/item/639499/content/pdf/frbsf_wp2016-19, accessed on March 26, 2025.