Nguyen, L. D., P. Le Tuan Tu, T. Minh Tri, and N. Kim Hoang Nam. “A Hybrid Approach to On-Grid and Off-Grid Solar Energy With Optimum Investment: A Case Study in Vietnam”. EAI Endorsed Transactions on Tourism, Technology and Intelligence, vol. 2, no. 1, Dec. 2024, doi:10.4108/eettti.6890.