CALDWELL, David H; CRUICKSHANK, Graeme D R. Lecture summaries 1997-8. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 128, p. 1121–1133, 1999. DOI: 10.9750/PSAS.128.1121.1133. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/10039. Acesso em: 26 apr. 2024.