LPN12-076 Counting to one: reducibility of one- and two-loop amplitudes at the integrand level.

LPN12-076 Counting to one: reducibility of one- and two-loop amplitudes at the integrand level.
Ronald H.P. Kleiss, Ioannis Malamos, Costas G. Papadopoulos, Rob Verheyen.
JHEP 1212 038 2012
arXiv