Nnaemeka, N. P., N. O. P. Uzoamaka, and A. R. Ifeoma. “Energy Sector and Business Development in South Eastern Nigeria: 1990 – 2016”. The International Journal of Business & Management, vol. 10, no. 2, Feb. 2022, doi:10.24940/theijbm/2022/v10/i2/BM2202-017.