1
Published 1989
Springer Netherlands
... concrete problems, results and techniques...

2
Published 1990
Springer Netherlands
... concrete problems, results and techniques...

3
Published 1990
Springer Netherlands
... concrete problems, results and techniques...

4
Published 1988
Springer Netherlands
... concrete problems, results and techniques...

5
Published 1993
Springer Netherlands
... concrete problems, results and techniques...

6
Published 1992
Springer Netherlands
... concrete problems, results and techniques...

7
Published 1991
Springer Netherlands
... concrete problems, results and techniques...

8
Published 1995
Springer Netherlands
... concrete problems, results and techniques...