Aiga von Hippel Editor & Author

Bernd Käpplinger is Professor at Justus-Liebig-University Giessen.

Steffi Robak is Professor at Leibniz University Hannover.

Aiga von Hippel and Wiltrud Gieseke are Professors at Humboldt-University Berlin.

Marion Fleige is Head of Department "Programmes and Participation" at the German Institute for Adult Education in Bonn.