11. Tiráž Format: bez média and svazek Type: model:article and TEXT Language: Czech Rights: http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
12. Tiráž Format: bez média and svazek Type: model:article and TEXT Language: Czech Rights: http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
13. Úvodník Creator: Valenta, Jan Format: print, bez média, and svazek Type: model:article and TEXT Subject: fyzika, časopisy, physics, journals, 6, and 53 Language: Czech Description: Jan Valenta. Rights: http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
14. Za Ing. Františkom Šteinom, CSc. Creator: Majerčáková, Oľga Format: bez média and svazek Type: model:article and TEXT Language: Slovak Rights: http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public