Author: Tiziano Peraro                                            
                                                                  
The algorithm implemented in the library is based on:
                                                                  
    P. Mastrolia, E. Mirabella and T. Peraro,                     
    "Integrand reduction of one-loop scattering amplitudes through
    Laurent series expansion,"
    JHEP 1206 (2012) 095  [arXiv:1203.0291 [hep-ph]].             

    T. Peraro,
    "Ninja: Automated Integrand Reduction via Laurent Expansion for
    One-Loop Amplitudes,"
    Comput. Phys. Commun. 185 (2014) 2771 [arXiv:1403.1229 [hep-ph]]
