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4. ESA/ESOC (2000); Data Delivery Interface Document (DDID); CL-ESC-ID-2001.
5. Ferri, P. and M. Warhaut (1997), Cluster Mission Operations, P.475–485 in The Phoenix and Cluster Missions, edited by C.P Escoubet, C.T. Russel and R. Schmidt, Kluwer Academic Publishers, 1997, ISBN 0-7923-4411-1.