F. R. Nandatari, M. L. A. Kurniawan, F. R. A. Lubis, D. C. Guritno, and I. Q. A’yun, “Renewable Energy, Trade Openness, and CO₂ Emissions in G20 Economies: Evidence from Dynamic Panel GMM ”, JEP: KMEP, vol. 27, no. 1, pp. 67–83, Jun. 2026.