1. Aristofanes: Oblaky Creator: Porubjak, Matúš Type: subordinate record Rights: autorská práva www.olympos.cz
2. Jubileum prof. Jaroslava Martinku Creator: Porubjak, Matúš Format: bez média and svazek Type: model:article and TEXT Language: Slovak Description: Matúš Porubjak Rights: http://creativecommons.org/publicdomain/mark/1.0/ and policy:public