LOPERA R., Oscar; MARTÍNEZ A., Gilberto. Morphology of the QRS complexes in fascicular beats. Medicina UPB, [S. l.], v. 3, n. 1, p. 56–63, 1984. Disponível em: https://revistas.upb.edu.co/index.php/medicina/article/view/6367. Acesso em: 25 jul. 2026.