CutTools: Computing 1-loop amplitudes at the integrand level
copied from cf-staging / cuttools-staticCutTools is based on the following papers: * G. Ossola, C. G. Papadopoulos and R. Pittau JHEP 0803:042,2008 * G. Ossola, C. G. Papadopoulos and R. Pittau Nucl. Phys. B 763 (2007) 147