Notice of two Vessels of Grey Stoneware (Bellarmines or Greybeards), one found full of Quicksilver in Shetland, the other at Eyemouth. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 19, p. 34–38, 1885. DOI: 10.9750/PSAS.019.34.38. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/6131. Acesso em: 8 dec. 2025.