Restavracija na escharata, otkrita prez avgust 2008 g. pri redovni archeologičeski razkopki do krepostnata stena na getskata stolica Chelis - Radev, Dimčo (Bulletin of the National Institute of Archaeology, 47 (2021), 0323-9535 | ISSN: 9786192540029, 2021)