Working Papers
European Immigrants and the Rise of the United States to the Technological Frontier (with Lee, Peters)
Optimal City Structure (with Allen, Li). PRELIMINARY. First Version: 07/15

Submitted Papers or Under Revision

A Geospatial Approach to Measuring Economic Activity (with Ai, Yang). New 4/25.
Combinatorial Discrete Choice: A Quantitative Model of Multinational Location Decisions (with Eckert, Shi).
Clean Growth (with Walsh). More Supplementary Material, Replication Package  
Spatial Production Networks (with Hunneus, Miyauchi). 4/25.
From Heterogeneous Firms to Heterogeneous Trade Elasticities: The Aggregate Implications of Firm Export Decisions (with Adao, Ganapati) New 11/24
General Equilibrium Effects in Space: Theory and Measurement (with Adao, Esposito). 2/25.  More  Previous version: Spatial Linkages Global Shocks and Local Labor Markets 
A Multivariate Distribution with Pareto Tails and Pareto Maxima (with Rodriguez-Clare, Jiun-Hua Su). 5/25.

Publications

Quantitative Regional Economics (with Allen) forth. Handbook of Regional and Urban Economics
The Economic Impacts of Clean Energy (with Walsh) forth. Brookings Papers for Economic Activity
On the Equilibrium Properties of Spatial Models (with Allen, Li) forth. American Economic Review Insights
Economic Activity Across Space: A Supply and Demand Approach (with Allen) Journal of Economic Perspectives, 2023, 37 (2), p.3-28 More Supplementary Material
The Welfare Effects of Transportation Infrastructure Improvements (with Allen), Review of Economic Studies, 2022, 89(6), 2911-2957
Firm Dynamics and Trade (with Alessandria, Ruhl) Annual Review of Economics, 2021, 13, 253-280.
The Extensive Margin of Exporting Products: A Firm-Level Analysis (with Muendler, Ganapati), American Economic Journal Macro 2021, 13(4), pp. 182-245). More Related: NBER WP 16641, Online Supplement, The Continuum Case
Universal Gravity (with Allen, Takahashi) Journal of Political Economy, 2020, 128(2), 393-433. More Related: NBER WP 20787,  Online Appendix, Capital Dynamics, Matlab Toolkit
The Elusive Pro-Competitive Effects of Trade (with Costinot, Donaldson, Rodriguez-Clare), Review of Economic Studies, 2019, 86(1), 46-80. More Related: NBER WP 21370, Codes, Gains: Simple Example
Innovation and Production in the Global Economy (with Ramondo, Rodriguez-Clare, Yeaple), American Economic Review, 2018, 108(8), 2128-73, More Related: NBER WP 18792, online appendix
Firm Learning and Growth (with Papageorgiou, Timoshenko), Review of Economic Dynamics, 2018, 27, 146-168.
Modern Spatial Economics, A Primer (with Allen), World Trade Evolution, Edited By Lili Yan Ing, Miaojie Yu.
A Unified Theory of Firm Selection and Growth, Quarterly Journal of Economics, 2016, 131(1), 89-155. More Related: NBER WP 17553, Theory, Data, More data
Trade and the Topography of the Spatial Economy (with Allen) Quarterly Journal of Economics, 2014, 129(3), More Related: NBER WP 19181, online appendix, Erratum, Replication files.
New Trade Models, Same Old Gains? (with Costinot, Rodriguez-Clare), American Economic Review, 2012, 102(1), 94-130. More Related: NBER WP 15628, (online appendix)
Market Penetration Costs and the New Consumers Margin in International Trade, Journal of Political Economy, 2010, 118 (6), 1151-1199. More Related: NBER WP 14214, (Appendix: theory, data, programs)
Exporters and Their Products: A Collection of Empirical Regularities (with Muendler), CESifo Economic Studies, 2013, 59(2), 223-248.
Vertical Specialization and International Business Cycles Synchronization (with Ramanarayanan), Scandinavian J. of Economics, Sp. Issue on Heterogeneity & Trade, 2009,111(4),665-680. More Related: Online Appendix
Endogenous Variety and the Gains from Trade (with Klenow, Demidova, Rodriguez-Clare), American Economic Review Papers & Proceedings, 2008, 98 (4), 444-450. More Related: NBER WP 13933, Welfare in Krugman model, Detailed Derivations