1. Ing. Jiří Kališ, CSc. Sedemdesiatpäťročný Creator: Bačík, Martin and Sikora, Anton 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
2. Prof. Ing. Dr.h.c. Pavel Gabriel, DrSc. 75-ročný Creator: Sikora, Anton 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