Musibau, H. O., Mahmood, S., Ismail, S., Haruna, M. A., & Khan, M. U. (2019). Electricity Availability, Human Capital Investment and Sustainable Economic Growth Causality in Sub Sahara Africa: Revisited Evidences. International Journal of Energy Economics and Policy, 9(6), 222–233. Retrieved from https://econjournals.com/index.php/ijeep/article/view/8201