Ullah, H. ., M. . Salim Khan, Z. . Shah, M. A. . Fălădău, N. . Fatima, M. . Sarwar, and K. . Abodayeh. “Finite Element Multigrid Simulation of Natural Convection in Hybrid Nanofluids Within Isolated Cavity for Solar Energy Systems: A Machine Learning-Levenberg-Marquardt Approach”. Contemporary Mathematics, vol. 7, no. 2, Mar. 2026, pp. 2030-5, doi:10.37256/cm.7220269157.