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We present a program for the numerical evaluation of form factors enteringthe calculation of one-loop amplitudes with up to six external legs. Theprogram is written in Fortran95 and performs the reduction to a certain set ofbasis integrals numerically, using a formalism where inverse Gram determinantscan be avoided. It can be used to calculate one-loop amplitudes with masslessinternal particles in a fast and numerically stable way.

Golem95: a numerical program to calculate one-loop tensor integrals with up to six external legs