2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/212943In this contribution we describe in some detail different aspects of the construction of BFKL cross sections. We focus on several effects which are relevant at next-to-leading order. In particular, we describe QCD coherence in DIS final states, improvements of the collinear region in multi-Regge kinematics, inclusive jet production at next-to-leading order, and azimuthal angle decorrelations of Mueller-Navelet jets at hadron colliders.Presented at School on QCD, Low x Physics, Saturation and Diffraction, Copanello (Calabria, Italy), July 1-14 2007High Energy Physics - Phenomenologytext