- Author: Kovacs Janos Matyas, Oleg Ananyin, Roumen Avramov, Fan Shitao, Horvath Julius, Denis Melnik, Jo Mencinger, Gabriel Mursa, Pașca Vlad, Franz Rudolph, V Sommer, Tymiński Maciej, Hans-J Wagener
- Language: English
- Year: 2018
- Author: Prof. Dr. Franz Rudolph (auth.)
- Language: German
- Year: 1993
- Author: Franz Rudolph (auth.)
- Language: German
- Year: 1994