equation (a very similar equation was proposed by Balitsky in [@e12]), and as we mentioned above, it contains all the multiple pomeron exchanges. The linear part of the equation is the BFKL part which dominates for small values of $N$ and which causes the cross section to rise exponentially. The non-linear part comes from the multiple pomeron exchanges and causes the amplitude to saturate for values near 1. The equation has a nice physical interpretation, the first two terms on the right hand side are the contributions to the scattering amplitude from the creation of the new dipoles, 12 and 20, while the third term comes from the fact that the original dipole, 10, no longer exists. The reader might guess that the non-linear term is the contribution from the recombination of the two dipoles, 12 and 20, into the original dipole 10, but as we said above the non-linear term comes from the multiple pomeron exchanges. The Balitsky-Kovchegov equation does not contain the process of two dipoles recombining into one. This fusion process should also contribute to saturation. For large gluon densities it should be non-negligible, but it is not an easy task to estimate this effect. In fact, 