Ludwig, Udo
[Author];
Berneburg, Marian
[Author];
van Deuverden, Kristina
[Author];
Brautzsch, Hans-Ulrich
[Author];
Dreger, Christian
[Author];
Grunert, Ruth
[Author];
Haschke, Ingrid
[Author];
Lindner, Axel
[Author];
Loose, Brigitte
[Author];
Weyerstraß, Klaus
[Author]