21
Published 1998
Springer Berlin Heidelberg

22
by Fabian, Peter
Published 1984
Springer Berlin Heidelberg

24
Published 2000
Springer Netherlands

25
Published 2001
Springer Netherlands

26
Published 2002
Springer Netherlands

27
Published 2002
Springer Netherlands

28
Published 2002
Springer Netherlands

30
by Zlatev, Zahari
Published 1995
Springer Netherlands

33
by Clark, J.H.
Published 1995
Springer Netherlands

34
by Ferencik, Miroslav
Published 1993
Springer Netherlands

35
by Phillips, David J.H., Rainbow, Philip S.
Published 1993
Springer Netherlands

36
Published 1991
Springer Netherlands

37
Published 1991
Springer Netherlands

38
by Wrobel, L. C.
Published 1991
Springer Netherlands

39
Published 2000
Springer Netherlands

40
Published 2000
Springer Netherlands