11. Slovanský přehled Creator: Hájek, J. Format: electronic Type: model:article and TEXT Language: Czech Rights: http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
12. Svatováclavský kult na českých mincích a pečetích Creator: Hájek, J. Format: electronic Type: model:article and TEXT Language: Czech Rights: http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
13. Z dějin numismatiky a sfragistiky Creator: Hájek, J. Format: electronic Type: model:article and TEXT Language: Czech Rights: http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
14. Z dějin numismatiky a sfragistiky Creator: Hájek, J. Format: electronic Type: model:article and TEXT Language: Czech Rights: http://creativecommons.org/publicdomain/mark/1.0/ and policy:public