Classical Wave Equation: A Gross Error in Mathematics and Physics. Bulletin of Pure and Applied Sciences – Physics, [S. l.], v. 42, n. 2, p. 98–107, 2023. DOI: 10.48165/bpas.2023.42D.2.7. Disponível em: https://acspublisher.com/journals/index.php/bpasphy/article/view/12542.. Acesso em: 3 jul. 2024.