Magazine Spektrum
ESG publishes a quarterly called Spektrum. It is written in German but includes an English summary.
2013
Spektrum 1 - Spring 2013 (3.3 MB)
2012
Spektrum 4 - Winter 2012 (3.2 MB)
Spektrum 3 - Autumn 2012 (3.4 MB)
Spektrum 2 - Summer 2012 (2.4 MB)
Spektrum 1 - Spring 2012 (2.6 MB)
2011
Spektrum 4 - Winter 2011 (3.2 MB)
Spektrum 3 - Autumn 2011 (3.3 MB)
Spektrum 2 - Summer 2011 (3.1 MB)
Spektrum 1 - Spring 2011 (2.6 MB)
2010
Spektrum 4 - Winter 2010 (3.1 MB)
Spektrum 3 - Autumn 2010 (2.9 MB)
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)