Literature

Special Issue "Information Services & Use", Vol. 33, No. 1 (2013)
APE 2013 German Press Information
APE Short Report 2012
APE Short Report 2011
APE Short Report 2010
APE Short Report 2009
APE Short Report 2008
APE Short Report 2007
APE Short Report 2006
APE Special Issue 2008
APE Special Issue 2007