WARDHANA, . M.; SOETARDJO, .; SEMIN; SANTOSO, .; FITRI, . P. Optimizing Ocean Energy Harvesting: The Significance of Natural Frequency in Piezoelectric Generator Device Electrical Output. International Journal of Marine Engineering Innovation and Research, [S. l.], v. 8, n. 4, p. 667–675, 2025. DOI: 10.12962/j25481479.v8i4.5090. Disponível em: https://journal.its.ac.id/index.php/ijmeir/article/view/5090. Acesso em: 3 jan. 2026.