AGARWAL, N., A. KUMAR, and V. GOEL. “Unit Sizing and Cost Analysis of Renewable Energy Based Hybrid Power Generation System - A Case Study”. Walailak Journal of Science and Technology (WJST), vol. 11, no. 1, Dec. 2013, pp. 19-32, https://wjst.wu.ac.th/index.php/wjst/article/view/392.