GRAHAM, Angus. Archaeological Gleanings from Dark-Age Records. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 85, p. 64–91, 1953. DOI: 10.9750/PSAS.085.64.91. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/8384. Acesso em: 4 may. 2024.