The Many Scales in the Universe - Joint European and National Astronomical Meeting; Alfaro, E.J; Del Toro Iniesta, J.C; Toro Iniesta, J.C; Toro Iniesta, Jose Carlos; Butcher, H.; Gorgas, Javier Garcia; Javier Alfaro, Emilio; Salvador-Solé, E. (Dordrecht Springer Netherlands, 2006)