J.  Arnau, Bergmann, M., Candreva, E. A., Corazza, G. E., De Gaudenzi, R., Devillers, B., Gappmair, W., Lombardo, F., Mosquera, C., Pérez-Neira, A., Thibault, I., and Vanelli-Coralli, A., ?Hybrid Space-Ground Processing for High-Capacity Multi-beam Satellite Systems?, in IEEE GLOBECOM, Houston, Texas, USA, 2011.

A.  Vanelli-Coralli, Corazza, G. E., Karagiannidis, G. K., Mathiopoulos, P. T., Michalopoulos, D. S., Mosquera, C., Papaharalabos, S., and Scalise, S., ?Satellite Communications: Research Trends and Open Issues?, in International Workshop on Satellite and Space Communications (IWSSC), 2007.