Agreement between the European Space Agency and the German Aerospace Center (DLR e.V.) acting as Space Administration on the Technology Demonstration Payload 1 for Alphasat signed by Magali Vaissière, ESA ESA Director of Telecommunications and Integrated Applications, and Dr. Gerde Gruppe, Member of the DLR Executive Board, at the ESA Pavilion, Paris Air and Space Show, 19 June 2013.