1
by Wetzel, Dietmar J.
Published 2003
Fink

2
by Mack, Elke
Published 2002
Schöningh

3
by Sutor, Bernhard
Published 1995
Schöningh

4
by Schmuhl, Hans-Walter
Published 1987
Vandenhoeck & Ruprecht

5
by Stegmann, Franz Josef
Published 1995
Schöningh