1. Objev a popis dvojpravidelných hranatin Creator: Hron, Jakub Publisher: J. Hron, Type: model:monograph and TEXT Subject: ddc:neuvedeno, udc:514.113, and udc:(049) Language: Czech Rights: http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
2. Objev a popis nových pravidelných hranatin Creator: Hron, Jakub Publisher: J. Hron, Type: model:monograph and TEXT Subject: ddc:neuvedeno, udc:514.113, and udc:(049) Language: Czech Rights: http://creativecommons.org/publicdomain/mark/1.0/ and policy:public