Stănică , A.-D. ., and B. S. . Szmoniewski. “The Sphero-Conical Vessels from the Lower Danube in the Light of New Discoveries from Isaccea, Tulcea County, Romania”. Sprawozdania Archeologiczne, vol. 68, Dec. 2016, pp. 327-44, doi:10.23858/SA68.2016.015.