MEASRURING ENERGY EFFICIENCY IN NIGERIA: ENERGY INTENSITY AND ENERGY-GDP ELASTICITY APPROACH. Singaporean Journal of Business Economics and Management, [S. l.], v. 5, n. (5), p. 29–37, 2016. Disponível em: https://www.singaporeanjbem.com/index.php/SJBEM/article/view/336. Acesso em: 27 aug. 2026.