Non-linear QCD dynamics in two-photon interactions at high energies V.P. Gonçalves, M.S. Kugeratski, E.R. Cazaroto, F. Carvalho and F.S. Navarra Eur. Phys. J. C, 71 10 (2011) 1779 Published online: 27 October 2011 DOI: 10.1140/epjc/s10052-011-1779-y