CHAKAROV, Kalin. “ROMAN AND LATE ROMAN LEAD TESSERAE FROM NICOPOLIS AD ISTRUM”. Numismatics, Sigillography and Epigraphy | Нумизматика, сфрагистика и епиграфика 21 (December 16, 2025): 213–242. Accessed October 12, 2026. https://publications.naim.bg/index.php/NSE/article/view/571.