​Transnational Terrorist Recruitment: Evidence from Daesh Personnel Records
With Mohamed Abdel Jelil, Kartika Bhatia, Quy-Toan Do and Clément Joubert
Forthcoming at Review of Economics and Statistics
            Coverage from Le Monde, Times of Israel, Times of India, Alarabiya, World Bank Blog

​Casting a Wider Tax Net: Experimental Evidence from Costa Rica [Ungated] [Appendix] [Slides]
With Marco Hernandez, Stewart Kettle, Spencer Smith 
American Economic Journal: Economic Policy, ​11(3), 55-87, 2019
         Coverage from VoxDev, ICTD, World Bank blog

Trade Between Algeria and Mali: The Normality of Informality
With Sami Bensassi, Matthieu Pellerin and Gael Raballand
Middle East Development Journal, 9, 1-23, 2017
Winner of the Prize for Best Paper in International Economics, Economic and Social Research Forum
         Coverage from The Economist

Production vs Revenue Efficiency with Limited Tax Capacity: Theory and Evidence from Pakistan [Slides]
With Michael Best, Henrik Kleven, Johannes Spinnewijn, Mazhar Waseem
Journal of Political Economy, 123(6), 1311-1355, 2015
         Coverage from Microeconomic Insights, Vox, World Bank Blog
         Featured by the Independent Commission for the Reform of International Corporate Taxation  

The Investment Effect of Taxation: Evidence from a UK Tax Kink
Fiscal Studies, 34(4), 477-509, 2014

Exporting for Development? The Pineapple Sector in Ghana
L’Economie Politique, 41, 69-78, 2009