GRANADOS, R. From Kekulé’s exagon to electronic theory. Ars Pharmaceutica (Internet), [S. l.], v. 6, n. 5-6, p. 193–201, 1965. Disponível em: https://revistaseug.ugr.es/index.php/ars/article/view/7903. Acesso em: 22 jul. 2024.