Magazine Spektrum
ESG publishes a quarterly called Spektrum. It is written in German but includes an English summary.
2010
Spektrum 2 - Summer 2010 ( 2.8 MB)
Spektrum 1 - Spring 2010 ( 2.4 MB)
2009
Spektrum 4 - Winter 2009 ( 2.5 MB)
Spektrum 3 - Autumn 2009 ( 3.1 MB)
Spektrum 2 - Summer 2009 ( 2.7 MB)
Spektrum 1 - Spring 2009 ( 1.3 MB)
2008
Spektrum 4 - Winter 2008 ( 2.6 MB)
Spektrum 3 - Autumn 2008 ( 3.0 MB)
Spektrum 2 - Summer 2008 ( 2.5 MB)
Spektrum 1 - Spring 2008 ( 3.8 MB)
2007
Spektrum 4 - Winter 2007 ( 3.0 MB)
Spektrum 3 - Autumn 2007 ( 3.6 MB)
Spektrum 2 - Summer 2007 ( 964 KB)
Spektrum 1 - Spring 2007 ( 1.7 MB)
2006
Spektrum 4 - Winter 2006 ( 1.8 MB)
Spektrum 3 - Autumn 2006 ( 1.5 MB)
Spektrum 2 - Summer 2006 ( 1.8 MB)
Spektrum 1 - Spring 2006 ( 1.5 MB)
2005
Spektrum 4 - Winter 2005 ( 1.6 MB)
Spektrum 3 - Autumn 2005 ( 876 KB)
Spektrum 2 - Summer 2005 ( 4.8 MB)
Spektrum 1 - Spring 2005 ( 4.6 MB)