O. Joseph Chukwudi, O. Chikeziem F., U. Chiagoziem Gospel, O. Roy M., and U. Chiwuike N., “Heterogeneous determinants of environmental sustainability: Assessing the roles of energy consumption, economic growth, and financial development”, EA, vol. 69, no. 241, pp. 65–93, Jul. 2024, doi: 10.2298/EKA2441065O.