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Extending the method successful for one-loop integrals, the computation oftwo-loop diagrams with general internal masses is discussed. For the two-loopvertex of non-planar type, as an example, we show a calculation related to\(Z^0\rightarrow t \bar t\) vertex.Comment: 8 pages, latex with epsf.sty. 2 figures embedded with latex command  and one postscript figure, revised version includes new reference

NUMERICAL APPROACH TO TWO-LOOP THREE POINT FUNCTIONS WITH MASSES