  A study of differential cross sections for the production of three and four
jets in multi-Regge kinematics is presented. The main focus lies on the
azimuthal angle dependences in events with two forward/backward jets are tagged
in the final state. Furthermore, the tagging of one or two extra jets in more
central regions of the detector with a relative separation in rapidity from
each other is requested. It is found that the dependence of the cross sections
on the transverse momenta and the rapidities of the central jet(s) can offer
new means of studying the onset of BFKL dynamics.
