Yang, Yu-Chen, Yi-Chich Chiu, and Cheng-Yih Hong. “Analysis of Cost-Benefit and CO2 Emissions of Solar Energy-Intelligent Poultry Feeding System: Application of NPV and Dynamic Environmental I-O Model”. International Journal of Energy Economics and Policy 10, no. 1 (November 13, 2019): 178–184. Accessed May 2, 2024. https://econjournals.com/index.php/ijeep/article/view/8443.