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4. P. Takats, A. Shoamanesh, W. Chen, A. Cotellessa "ESA SkyLAN: The Canadian Team's GEO Satellite Cluster", AIAA 22ndICSSC, Monterey, USA, 9-12May 2004.
5. J.D. Gayrard, P. Agnieray, "Study and definition of an optical Intersatellite Link within a satellite cluster" 35th Congress of the IAF, oct. 7-13, 1984, Lausanne Switzerland.