Research

Peer-reviewed journal articles 

1. Can innovation reduce the size of the informal economy? with Kolotioloma I.H. Yéo. Accepted at Comparative Economic Studies.

2. Can past informality impede registered firms' access to credit? Journal of Comparative Economics. (2025).

3. Firms' sustainable and responsible innovation in Nigeria: Does informality play a role? with Farid Gasmi and Maruf Sanni, Economics of Transition and Institutional Change (formerly Economics of Transition), 33(1), 139-164. (2025). 

4. An empirical analysis of the social contract in the Middle East and North Africa region and the role of digitalization in its transformation, with Farid Gasmi, Paul Noumba Um, and Pedro Rojas Milla, Economics of Transition and Institutional Change (formerly Economics of Transition), 32(4), 1193-1243. (2024). 

5. 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). 

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

7. 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). 

8. Gouvernance et autonomie stratégique par l'innovation : Une étude exploratoire, avec Eva Szego, Economie Appliquée, 1(3), 83-113. (2022). English Abstract. 

9. 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.

10. 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). 

Working papers

• High-quality financial statements, credit constraints, and labor productivity. CREM Working Paper. Center for Research in Economics and Management (CREM), University of Rennes, University of Caen, and CNRS. March 2025. Reject and Resubmit.

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

• The effect of informal competition on registered firms' credit constraints: Global evidence, channels, and the roles of productivity and financial development. Working Paper 2024-10, Center for Research in Economics and Management (CREM), University of Rennes, University of Caen, and CNRS. October 2024.

  • Find the last update here: Managing credit constraints under competitive pressure from the informal sector. May 2025. Submitted.

• Does firm informality hurt permanent employment? with Kolotioloma I.H. Yéo. Submitted.

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