Social Entrepreneurship in the Water SectorRafael Ziegler, Lena Partzsch, Jana Gebauer, Franziska Mohaupt, Justus Lodemann · First published 2014Open the Tome
Social Entrepreneurship Staus Quo 2009Marianne Henkel, Jana Gebauer, Justus Lodemann, Franziska Mohaupt, Lena Partzsch, Eva Wascher, Rafael Ziegler · First published 2010Open the Tome
