KAFAIT ULLAH. A Framework for Measuring the Sustainability of Energy Systems: A Comparative Analysis of Pakistan, European Union and USA. International Journal of Economic and Environmental Geology, [S. l.], v. 15, n. 3, 2025. Disponível em: https://econ-environ-geol.org/index.php/ojs/article/view/454. Acesso em: 17 aug. 2025.