Finding the Harmonic Contents of Periodic Square Wave. ENERGY: JURNAL ILMIAH ILMU-ILMU TEKNIK, [S. l.], v. 15, n. 1, p. 98–108, 2025. DOI: 10.51747/energy.v15i1.1519. Disponível em: https://e-journal.upm.ac.id/index.php/energy/article/view/energy.v15i1.1519. Acesso em: 11 aug. 2025.