Ali R. Khalf, Gamal M. Aburiyana, Adal A. Rajhi, Abdurraouf M. Aghila, and Saad S. Saad, “Calculating the Optimum Value of Photovoltaic Panel Tilt Angle in Tripoli, Libya”, JFET, vol. 1, no. 23, pp. 328–318, Jun. 2026.