Obafemi, Frances Ngozi, and Eugene Okoi Ifere. “Non-Technical Losses, Energy Efficiency and Conservative Methodology in the Electricity Sector of Nigeria: The Case of Calabar, Cross River State”. International Journal of Energy Economics and Policy, vol. 3, no. 2, Apr. 2013, pp. 185-92, https://econjournals.com./index.php/ijeep/article/view/451.