{"id":"001220417","type":"book","title":"Dolnodunavskijat limes v karti ot 15-18 v. Le limes du Bas-Danube sur les cartes des 15e-18e siècles","pages":"5-18","container-title":"Arheologija (Sofija), 36,2 (1994","author":[{"family":"Ivanov","given":"Rumen Teofilov"}],"issued":{"raw":"1994"}}