ANDERSON, Joseph. Notes on a Deposit of Flints worked to a leaf-shape, found at Bulwark, Old Deer, Aberdeenshire; exhibited by Alexander Gray, New Deer. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 30, p. 346–351, 1896. DOI: 10.9750/PSAS.030.346.351. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/6633. Acesso em: 25 apr. 2024.