Federal Reserve Bank of San Francisco. "Staying at Zero with Affine Processes: An Application to Term Structure Modelling" in 5th Conference on Fixed Income Markets : Recent Advances in Fixed Income Research and Implications for Monetary Policy, November 5-6, 2015 (March 26, 2015). https://fraser.stlouisfed.org/title/9958/item/735760, accessed on September 1, 2026.