11. Za prof. Čeňkem Dvořákem Creator: Nachtikal, František Format: electronic Type: model:article and TEXT Language: Czech Rights: http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
12. Za profesorem Matyášem Lerchem Creator: Nachtikal, František Format: electronic Type: model:article and TEXT Language: Czech Rights: http://creativecommons.org/publicdomain/mark/1.0/ and policy:public