Thamer , M. “Using Longitudinal Chain Models to Measure Renewable Energy for a Sample of Selected Asian Countries (China, India, Japan) for the Period (2006-2023)”. The Gulf Economist, vol. 41, no. 66, Dec. 2025, pp. 190-73, https://tge.uobasrah.edu.iq/index.php/tge/article/view/201.