PAVLICHENKO, Natalia; SOKOLOVA, Olga. Fragments of Lead Letters from Nymphaion. Hyperboreus, Bern, v. 22, n. 2, p. 192–202, 2017. DOI: 10.36950/hyperboreus.BYZH7597. Disponível em: https://bzl-online.ch/index.php/Hyperboreus/article/view/12356. Acesso em: 16 aug. 2025.