An implementation of the two-loop helicity amplitudes for diboson production
using the results of:

T.~Gehrmann, A.~von Manteuffel and L.~Tancredi,
``The two-loop helicity amplitudes for $ q\overline{q}^{\prime}\to {V}_1{V}_2\to 4 $ leptons,''
JHEP \textbf{09}, 128 (2015)
[arXiv:1503.04812 [hep-ph]].

taken from https://vvamp.hepforge.org/.