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We apply equivariant integration technique, developed in the context of instanton counting, to two dimensional N=2 supersymmetric Yang-Mills models. Twisted superpotential for U(N) model is computed. Connections to the four dimensional case are discussed. Also we make some comments about the eight dimensional model which manifests similar features.doi:10.1088/1126-6708/2007/08/052 fatcat:mcedbugzcva2rjtkejejou7zi4