The Woman and the Snake: Around the Pledge Letter of Countess Urraca Fernández (SP). Edad Media. Revista de Historia, [S. l.], n. 18, p. 240–262, 2017. DOI: 10.24197/em.18.2017.240-262. Disponível em: https://revistas.uva.es/index.php/edadmedia/article/view/574. Acesso em: 10 jan. 2026.