Petrunov, Filip. 2023. “Торнезета от средновековния град Лютица: Tornesels from the Medieval Town of Lyutitsa”. Numismatics, Sigillography and Epigraphy | Нумизматика, сфрагистика и епиграфика 19 (December):105-16. https://publications.naim.bg/index.php/NSE/article/view/391.