{"id":"001000523","type":"book","title":"Similarities and differences among Lettigallian and German castles in Eastern Latvia during the 9th-15th centuries","publisher-place":"Nyköping","pages":"117-124","container-title":"Castella Maris Baltici : 2","author":[{"family":"Mugurevičs","given":"Evalds 1931-"}],"issued":{"raw":"1996"}}