Amanfo, Smart Edward. “Total Factor Productivity Growth of Ghanaian Electricity Distribution Utilities Using Data Envelopment Analysis and Malmquist Index (2000–2020)”. Journal of Economics, Finance and Accounting Studies 3, no. 2 (December 25, 2021): 233–248. Accessed August 7, 2025. https://al-kindipublishers.org/index.php/jefas/article/view/2559.