31. Vzpomínka na Františka Machovce Creator: ČUPR, Karel Format: electronic Type: model:article and TEXT Language: Czech Rights: http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
32. Vzpomínka na Jana Sobotku Creator: ČUPR, Karel Format: electronic Type: model:article and TEXT Language: Czech Rights: http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
33. Za tajemnou oponou matematiky Creator: ČUPR, Karel Format: electronic Type: model:article and TEXT Language: Czech Rights: http://creativecommons.org/publicdomain/mark/1.0/ and policy:public