1
published 2010
Journal
2
published 1992
Journal
3
published 1991
Journal
4
published 1981
Journal Zeitschrift
5
published 1980
Journal
6
published 1979
Journal Zeitschrift
7
published 1973
Journal Zeitschrift
8
published 1972
Journal
9
published 1960
Journal Zeitschrift
10
published 1960
Journal