Ueasin, Nattanin, Anupong Wongchai, and Sakkarin Nonthapot. 2015. “Performance Assessment and Optimization of Biomass Steam Turbine Power Plants by Data Envelopment Analysis”. International Journal of Energy Economics and Policy 5 (3):668-72. https://econjournals.com./index.php/ijeep/article/view/1231.