  We discuss briefly a recent study of new observables in LHC inclusive events
with three tagged jets. One jet is in the forward direction, the second is in
the backward direction and well-separated in rapidity from the first, whereas,
the third tagged jet is to be found in more central regions of the detector.
Taking into consideration that non-tagged mini-jet emissions are allowed and
that they may be accounted for by the BFKL gluon Green function, we project the
cross sections on azimuthal-angle components and define suitable ratios based
on these projections which can provide several distinct tests of the BFKL
dynamics.
