"The Curse: Why Natural Resources Are Not Always a Good Thing,” Milken Institute Review, vol.13, no.4, 4th quarter 2011: 28-39.
“How Can Commodity Exporters Make Fiscal and Monetary Policy Less Procyclical?” in Beyond the Curse: Policies to Harness the Power of Natural Resources, R.Arezki, T.Gylfason & A.Sy, eds. (IMF, 2011). Keynote, High Level Seminar, IMF Institute & Central Bank of Algeria, Algiers, Nov. 2010.
"Should Gold-Exporters Peg Their Currencies to Gold?" Research Study No.29, (World Gold Council, London), 2002.
"Cocoa in Ghana: The Cocoa Farmers, Cocoa Marketing Board, and Elasticity of Supply," MIT, 1974.
See also: Commodities and Africa