1. Céramique antique et pièces d'ancres trouvées en mer à la pointe de Kynosoura (Baie de Marathon);Braemer;Bulletin de correspondence hellénique,1953
2. Anchors from Tomis;Cosma;IJNA,1973
3. Anchors from the ancient ports of Sozopol;Dimitrov;IJNA,1977
4. Haldane, D. , 1984, The Wooden Anchor. Unpublished Master's Thesis, Department of Anthropology, Texas A&M University.