Simeonov, Grigori. „The Region of the Danube Delta in the 7th to 10th Century and the Case of the so-Called Lykostomion Maritime Province“. Seasides of Byzantium: Harbours and Anchorages of a Mediterranean Empire, herausgegeben von Johannes Preiser-Kapeller u. a., Propylaeum, 2022, S. 233-54, https://doi.org/10.11588/propylaeum.910.c12059.