"Macroeconomic determinants of international commodity prices," Ppt slides (pdf), Keynote Address, JPMCC International Commodities Symposium,University of Colorado Denver Business School, August 13-15, 2018.
"Why Are Commodity Prices Falling?" Project Syndicate, Dec. 15, 2014. "Commodity Prices: Down in Dollars, Up in Euros," VoxEU, Dec.24, 2014.
Course on Monetary Policy & Commodities, Study Center Gerzensee, Swiss National Bank, June 2014. Lecture slides on: Commodity Prices; NR Curse; Currency Policy.
Video of session on forecasting commodity prices. paper presented at Conference on Understanding International Commodity Price Fluctuations (organized by the IMF Research Dept. & the Oxford Centre for the Analysis of Resource Rich Economies, March 2013, Washington, D.C.)
“Commodity Prices and Interest Rates,” Economic Outlook (CoBank), Oct. 2012, vol.9, no. 10, pp.1-6.
"Monetary Policy and Commodity Prices," VoxEU, 2008.
"An Explanation for Soaring Commodity Prices," VoxEU, 2008.
"Real Interest Rates Cast a Shadow Over Oil," Financial Times, April 15, 2005. Revised from "Why Are Oil and Metal Prices High? Don’t Forget Low Interest Rates."