D. Németh, Zsuzsanna, and László Székely. “Examination of the Energy Dependency in the Mirror of the Renewable Energy Sources and the Greenhouse Gas Emission”. Studia Mundi – Economica 5, no. 2 (June 28, 2018): 27–41. Accessed April 5, 2026. https://journal.uni-mate.hu/index.php/stm/article/view/3114.