Space : memorandum of understanding between the United States of America and Germany signed at Washington and Potsdam, January 31 and February 10, 2014 ; entered into force February 10, 2014
Memorandum of Understanding between the National Aeronautics and Space Administration of the United States of America and the German Research Centre for Geosciences of the Federal Republic of Germany for Cooperation on the Gravity Recovery and Climate Experiment Follow-On Mission (2014 January 31).