81. Walther Haupt - Zur Münzkunde des Landes Zittau im Mittelalter Type: ARTICLE, model:article, and TEXT Language: German Rights: http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
82. XV. Hauptbericht Type: model:article and TEXT Language: German Rights: http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
83. XVI. Hauptbericht Type: model:article and TEXT Language: German Rights: http://creativecommons.org/publicdomain/mark/1.0/ and policy:public