Kafait Ullah and Hussain Ali (2024) “A Framework for Measuring the Sustainability of Energy Systems: A Comparative Analysis of Pakistan, European Union and USA : 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, 15(4), pp. 33–48. doi: 10.46660/ijeeg.v15i4.513.