1
published 1994
Journal Zeitschrift
2
published 1993
Journal
3
published 1992
Journal Zeitschrift
5
published 1991
Journal
6
published 1991
Journal Zeitschrift
7
8
published 1982
Journal
9
published 1978
Journal Zeitschrift
10
published 1968
Journal Zeitschrift
11
published 1967
Journal Zeitschrift
12
published 1964
Journal
13
published 1948
Journal Zeitschrift
15