Y. Kassem, H. Camur, and O. A. Al Halim, “Static Structural Simulation and Economic Feasibility of Hybrid Solar–Rainwater Rooftop Systems: A Case Study from Beirut, Lebanon”, Eng. Technol. Appl. Sci. Res., vol. 16, no. 2, pp. 33218–33227, Apr. 2026.