MAKHANKOV, Vladimir; AGÜERO GRANADOS, Máximo. Bubbles Soliton Solutions in the ?? - Field Theory. Pro Mathematica, [S. l.], v. 6, n. 11-12, p. 143–154, 1992. Disponível em: https://revistas.pucp.edu.pe/index.php/promathematica/article/view/3444. Acesso em: 27 dic. 2025.