STEPHENS, George; SIMPSON, James Y. Special Meeting: 31 December 1866. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 7, p. 34–56, 1869. DOI: 10.9750/PSAS.007.34.56. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/5312. Acesso em: 8 may. 2024.