Research

Peer-reviewed journal articles 

CNRS: The last journal ranking by the French CNRS, published in 2020 (no updates since). Rankings range from 1 (top) to 4 (bottom).

CNU: The most recent journal ranking by the French Conseil National des Universités. Rankings range from A (top) to C (bottom).

1. High-quality financial statements, credit constraints, and labor productivity. Accepted at Economics Bulletin. (2025). (CNRS: 3; CNU: B)

2. Can innovation reduce the size of the informal economy? with K.I.H. Yéo, Comparative Economic Studies, 67(3), 623-681. (2025). (CNRS: 3; CNU: B)

3. Can past informality impede registered firms' access to credit? Journal of Comparative Economics, 53(3), 786-815. (2025). (CNRS: 1; CNU: A)

4. Firms' sustainable and responsible innovation in Nigeria: Does informality play a role? with F. Gasmi and M. Sanni, Economics of Transition and Institutional Change (formerly Economics of Transition), 33(1), 139-164. (2025). (CNRS: 2; CNU: A)

5. An empirical analysis of the social contract in the Middle East and North Africa region and the role of digitalization in its transformation, with F. Gasmi, P. Noumba Um, and P. Rojas Milla, Economics of Transition and Institutional Change (formerly Economics of Transition), 32(4), 1193-1243. (2024). (CNRS: 2; CNU: A)

6. Explaining process innovation in developing countries: The role of a firm's status, formal or informal, Managerial and Decision Economics, 44(6), 3077-3085. (2023). (CNRS: 3; CNU: B) 

7. Competing against 'invisibles': the effect of competition from informal firms on formal firms' R&D, Eurasian Business Review, 13(1), 87-117. (2023). (CNRS: 3; CNU: B)  

8. Separating innovation short-run and long-run technical efficiencies: Evidence from the Economic Community of West African States (ECOWAS), European Journal of Comparative Economics, 19(1), 103-141. (2022). (CNRS: 3; CNU: B) 

9. Gouvernance et autonomie stratégique par l'innovation : Une étude exploratoire, avec E. Szego, Economie Appliquée, 1(3), 83-113. (2022). English Abstract. (CNRS: 4; CNU: C) 

10. Innovation, ancienneté du manager et implication des employés dans la prise de décision au sein des entreprises d'un pays en développement, Revue Economique, 73(5), 781-810. (2022). English Abstract. (CNRS: 2; CNU: A)

11. Determinants of employees' participation in decision-making in developing countries: Does a firm's formal versus informal status matter?, Managerial and Decision Economics, 43(5), 1501-1514. (2022). (CNRS: 3; CNU: B)

Working papers

1. Crime and access to finance. CREM Working Paper. Center for Research in Economics and Management, University of Rennes, University of Caen, and CNRS. September 2025. Submitted to International Review of Law and Economics. (CNRS: 1; CNU: A)

2. Coups d'état and the informal economy, with A.E. Apeti, A. Okara, and K.I.H. Yéo. CREM Working Paper. Center for Research in Economics and Management, University of Rennes, University of Caen, and CNRS. September 2025. Submitted to World Development. (CNRS: 1; CNU: A)

3. Power outages and registered firms' financial constraints in developing countries. CREM Working Paper. Center for Research in Economics and Management, University of Rennes, University of Caen, and CNRS. July 2025. Submitted to JDE. (CNRS: 1; CNU: A)

4. Does firm informality hurt permanent employment? with K.I.H. Yéo. CREM Working Paper. Center for Research in Economics and Management, University of Rennes, University of Caen, and CNRS. July 2025.

5. The high-tech trap: Corruption risks in a new wave of privatization, with I. Bertè, L. Demoury, F. Gasmi, N. Patzig, L. Recuero Virto, and P. Saba. July 2025. Revise and Resubmit at Journal of Regulatory Economics. (CNRS: 2; CNU: A) 

6. Managing credit constraints under competitive pressure from the informal sector. May 2025. Submitted to Economics of Transition and Institutional Change (formerly Economics of Transition). (CNRS: 2; CNU: A)

7. Informal origin and the labor productivity of registered firms in sub-Saharan Africa. CREM Working Paper. Center for Research in Economics and Management, University of Rennes, University of Caen, and CNRS. February 2025.

8. Evaluating the integration of artificial intelligence technologies in defense activities and the effect of national innovation system performance on its enhancement, with E. Szego. MPRA Paper no. 120617. April 2024.