2
   
8
Published: Wiesbaden, VS Verlag für Sozialwissenschaften / Springer Fachmedien Wiesbaden GmbH, Wiesbaden, 2011
   
9
Published: München, Beck, 2010
   
12
Published: Wiesbaden, VS Verlag für Sozialwissenschaften / GWV Fachverlage GmbH, Wiesbaden, 2009
   
14
Published: Berlin, Robert Koch-Inst., 2006
   
15
   

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