{"id":"000333553","type":"book","title":"Zur Problematik byzantinischer Monogrammsiegel. Mit Berücksichtigung der späten Entwicklung","pages":"19-28","container-title":"Studies in Byzantine sigillography, 3. [Third International Colloquium on Byzantine Sigillography, Moscow 9-10th August 1991","author":[{"family":"Seibt","given":"Werner"}]}