Mansouri, Rim, and Said Tounsi. “Voluntary Environmental Regulation, Innovation and Access to Finance in Moroccan Firms: Revisiting Porter’s Hypothesis”. International Journal of Energy Economics and Policy 16, no. 1 (December 26, 2025): 45–50. Accessed January 10, 2026. https://www.econjournals.com/index.php/ijeep/article/view/21561.