{"id":"000045228","type":"book","title":"Dolnodunavskata otbranitelna sistema meždu Dortikum i Durostorum ot Avgust po Mavrikij","publisher":"Izd. ALEA","publisher-place":"Sofija","author":[{"family":"Ivanov","given":"Rumen Teofilov"}],"issued":{"raw":"1999"}}