Slavchev, Vladimir (2010). "The Varna Eneolithic Cemetery in the Context of the Late Copper Age in the East Balkans". In Anthony, David; Chi, Jennifer (eds.). The Lost World of Old Europe: The Danube Valley, 5000-3500 BC. New York University, Institute for the Study of the Ancient World. pp. 192–211. ISBN9780691143880.
"The Varna Treasures; Archaeological Museum, Varna". Thracian Treasures from Bulgaria: Checklist of The Special Exhibition, June 11 – September 4, 1977, coordinated by Dietrich von Bothmer, items 20–74. New York: Metropolitan Museum of Art. 1977. Archived from the original on 6 July 2018. Retrieved 6 July 2018 – via Digital Collections of the Metropolitan Museum of Art.
"The Varna Treasures; Archaeological Museum, Varna". Thracian Treasures from Bulgaria: Checklist of The Special Exhibition, June 11 – September 4, 1977, coordinated by Dietrich von Bothmer, items 20–74. New York: Metropolitan Museum of Art. 1977. Archived from the original on 6 July 2018. Retrieved 6 July 2018 – via Digital Collections of the Metropolitan Museum of Art.