STEER, Kenneth A. The Nature and Purpose of the Expansions on the Antonine Wall. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 90, p. 161–169, 1959. DOI: 10.9750/PSAS.090.161.169. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/8525. Acesso em: 20 apr. 2024.