LYNN, Francis. A Survey of the Catrail. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 32, p. 62–90, 1898. DOI: 10.9750/PSAS.032.62.90. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/6692. Acesso em: 30 apr. 2024.