Published papers
"Fiscal Expectations, the Sovereign–Bank Nexus, and Bond Yields in Emerging and Developing Economies", [Accepted, Journal of Macroeconomics, 2026] [old version: IMF WP][Fiscal Monitor: Fiscal Policy under Uncertainty]
"Enhancing Efficiency of Public Expenditure Through GovTech", [forthcoming, International Tax and Public Finance, 2026]
"Connectivity Gains from Regional Integration in the Greater Mekong Subregion" (with Yesim Elhan-Kayalar, Konstantin Kucheryavyy, Yasuyuki Sawada, Ruo Shangguan)[forthcoming, Asian Economic Policy Review, 21(2)(2026)][JCER WP]
"Evaluating Fiscal Supports on the Public-Private Partnerships: A Hidden Risk for Contract Survival"[Oxford Economic Papers, 77(2025): 806-828]
"The Impact of the COVID-19 on Japanese Firms: Mobility and Resilience via Remote Work" (with Daiji Kawaguchi; Sagiri Kitao) [International Tax and Public Finance, 29(2022): 1419–1449] [RIETI DP][CREPE DP][CAMA WP]
"Decentralized Provision of Disaster Aid: Aid Fragmentation and the Poverty Implications" [International Tax and Public Finance, 29 (2022): 1098–1127]
"Determinants of the Distance between Sovereign Credit Ratings and Sub-sovereign Bond Ratings: Evidence from Emerging Markets and Developing Economies" (with Sanket Mohapatra, IIM Ahmedabad; Dilip Ratha, World Bank) [Applied Economics, 50(9)(2018): 934-956]
"Estimation of Drivers of Public Education Expenditure: Baumol's Effect Revisited" [International Tax and Public Finance, 24(3)(2017): 512-535]
"Long-term Impacts of Global Food Crisis on Production Decisions: Evidence from Farm Investments in Indonesia"(with Futoshi Yamauchi, IFPRI) [Journal of Development Studies, 52(11)(2016): 1665-1683 ]
"Micro Responses to Disaster Relief Aid: Design Problems for Aid Efficacy" [Economic Development and Cultural Change, 62(4) (2014): 727-767]
Working papers
"From Battlefield to Marketplace: Legacies, Highway and Polycentric Development in Vietnam" (with Yasuyuki Sawada)[Keio-IES, CREPE DP#170, CIRJE DP][slide] New draft coming soon.
"Foreign Direct Investment and Trade Dynamics in VietNam after the US–PRC Trade Dispute" (with Yesim Elhan-Kayalar, Konstantin Kucheryavyy, Yasuyuki Sawada, Ruo Shangguan, Tung Nguyen)[slide]
"Demographic Influences on Technology Adoption: Network Effects in E-commerce Diffusion" (with Daiji Kawaguchi; Sagiri Kitao)[RIETI DP][CREPE DP]
"Industrial Zones and Production Linkages: Evidence from Vietnam" (with Hisaki Kono, Minh Le, Yasuyuki Sawada)[Kyoto DP]
"Digitalization, Firm Resilience, and Inequality in Global Crises" (with Jiro Honda) [IMF Working Paper WP/23/95 ] R&R
"Leveraging Digital Technologies in Boosting Tax Collection", (with Nicola Pierri, Jiro Honda) [IMF WP]
"Enhancing Tax Capacity: Revenue Gains from Strengthening Tax Administration" (with Jean-Marc B. Atsebi, Nikolay Gueorguiev) [IMF Working Paper WP/25/219]
"Inclusive GovTech: Enhancing Equity and Efficiency Through Public Service Digitalization" [IMF Working Paper WP/23/226]
"Minimum Wage, Market Competition, and Firm Growth: Panel Event Study Analysis in Vietnam" [IIPF 2020 version] [submitted, under review]
"Labor Market Dynamics after Natural Disaster: Evidence from Post-tsunami Aceh Panel Data" [University of Tokyo, CREPE DP#56]
"Quantifying the Revenue Yields from Tax Administration Reforms" (with Hassan Adan, Jean-Marc B. Atsebi, Nikolay Gueorguiev, Jiro Honda) [IMF Working Paper WP23/231]
Book chapters
"The Effect of Regulatory Policy on Firm Growth in sub-Saharan Africa", Chapter 4 of the Global Informal Workforce: Priorities for Inclusive Growth, IMF [old version as IMF Working Paper WP18/184]
"The Informal Economy in Sub-saharan Africa", IMF Regional Economic Outlook: Sub-Saharan Africa, May 2017
"Public Expenditure Reform: Making Difficult Choices", IMF Fiscal Monitor, April 2014
日本語論文
「貿易紛争」『フィナンシャル・レビュー』令和8年（2026年）第1号（通巻第162号）、pp.122-148、2026年3月（澤田康幸氏と共著）
Work in progress
“Estimating the Value of Infrastructure in Vietnam: A Structural Approach”
"Root causes of firm dynamics: Evidence from Japan"
"Stagnation of Innovation in Japan"
"Impact of Tax Administration Reforms on Tax Compliance in Japan"
"Remote Work and Remote Business: The New Alternatives"
Policy papers
"Transforming Public Finance Through GovTech" (with D. Amaglobeli, R. de Mooij, A. Mengistu, M. Moszoro, S. Nunhuck, S. Pattanayak, L. del Paso, F. Solomon, R. Sparkman, H. Tourpe, G. Una) [IMF Staff Discussion Note, 2023]
"Exploring the Adoption of Selected Digital Technologies in Tax Administration: A Cross-Country Perspective"(with A. Mengistu)
"SDGs with Climate Resilience: Spending Needs and Macro-Fiscal Implications" [selected issue paper prepared for the 2021 Solomon Islands Article IV Consultation]
"Creation of Value-added and Pricing Decision: Small-and-Medium Enterprises in Japan" (2020 White Paper by the Ministry of Economy, Industry, and Trade, Japan)
"Fiscal Rules: Coping with Revenue Volatility" (with Jiro Honda, Natalia Koliadina, Murna Morgan, Jose Torres (all IMF), Fernando Im (World Bank), and Cesar Padilla (McMaster University)) [IMF Departmental Paper, 2017]
"Domestic Spillovers of Commodity Price Shocks in South Africa" [selected issue paper prepared for the 2016 South Africa Article IV Consultation]
"Triggers of Contract Breach: Contract Design, Shocks, or Institutions?" [World Bank Policy Research Working Paper #6738]
"Fiscal Commitments to Encourage PPP Projects in Transport Infrastructure", in Transport Infrastructure and Systems (London: Taylor & Francis Group) (with Nozomi Nose and Cesar Queiroz)
Other Writing/Essay
"Development Economists' Careers in Academia and Policy Institutions" [Japan Association for Development Economics (JADE) Letter No. 10, 2025]
Research grants/collaboration
"Causal Effect of Tax Administration Reforms" (with Shunichiro Bessho (PI), Takero Doi) (funded by the JSPS Grant-in-Aid for Scientific Research B (KAKEN)), 2026-2029
"Impact Evaluation of Interregional Transport Connectivity: Remote Sensing Data and Structural Approach" (with the Asian Development Bank),
"Evaluation of Public and Private Provisions of Infrastructure for Urban Development: Application of Big Data" (funded by the JSPS Grant-in-Aid for Young Scientists (KAKEN)), 2018-2020
"Determinants of Firm Productivity in Developing Countries: Comparative Analysis between Low-income and Emerging Market Countries" (funded by the Kikawada Foundation)
"Firm and Farm Size Puzzles in Developing Countries" (funded by the Institute of Economic Research, Hitotsubashi University)