{"id":"001362830","type":"article","title":"Some observations from the point of view of the Slon fortifications about power centres in the Lower Danube between the eighth and thenth centuries","publisher":"Wydawnictwo Instytutu Archeologii i Etnologii PAN","publisher-place":"Warszawa","pages":"275-289","container-title":"Potestas et communitas","author":[{"family":"Ciupercă","given":"Bogdan"}],"issued":{"raw":"2010"}}