"America’s Big Monetary Policy Mistake: How Negative Interest Rates Could Have Stopped the Great Recession in Its Tracks" in Japanese: アメリカの金融政策の大きな過ち：そのとき、どうして負の利子率なら大不況を止められたか →

The link above is to the Japanese version. “America’s Big Monetary Policy Mistake: How Negative Interest Rates Could Have Stopped the Great Recession in Its Tracks” in English can be found here.