BUCHANAN, John. Discovery of an iron instrument lately found imbedded in a natural seam of coal in the neighbourhood of Glasgow. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 1, p. 121–124, 1854. DOI: 10.9750/PSAS.001.121.124. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/3933. Acesso em: 19 apr. 2024.