%0 Journal Article %T Algebraic Renormalization: perturbative twisted considerations on topological Yang-Mills theory and on N=2 supersymmetric gauge theories %A F. Fucito %A A. Tanzini %A L. C. Q. Vilar %A O. S. Ventura %A C. A. G. Sasaki %A S. P. Sorella %J Physics %D 1997 %I arXiv %X Lectures given at the First School on Field Theory and Gravitation, Vit\'{o}ria, Esp\'{\i}rito Santo, Brazil, 15-19 April, 1997. %U http://arxiv.org/abs/hep-th/9707209v1