Aaboud M, others. {Measurement of the $ZZ$ production cross section in proton-proton collisions at $\sqrt s =$ 8 TeV using the $ZZ\to\ell^{-}\ell^{+}\ell^{\prime -}\ell^{\prime +}$ and $ZZ\to\ell^{-}\ell^{+}?\bar?$ channels with the ATLAS detector}. JHEP. 2017;01:099.