{"id":"000644334","type":"article","title":"On the early Byzantine fortification system of Philippopolis. (Bulg.) -","pages":"52-66","container-title":"Godišnik na Arheologičeski muzej Plovdiv. Annuaire du Musée archéologique Plovdiv, 10.2001","author":[{"family":"Kessyakova","given":"E."}],"issued":{"raw":"2001"}}