A. R. Biswal and D. R. Biswal, “Vibrational Energy Harvesting from Functionally Graded Nonprismatic Beams”, Int. J. Automot. Mech. Eng., vol. 22, no. 2, pp. 12359–12372, Jun. 2025, doi: 10.15282/ijame.22.2.2025.9.0946.