Three-Loop Results on the Lattice
  We present some new three-loop results in lattice gauge theories, for the Free Energy and for the Topological Susceptibility. These results are an outcome of a scheme which we are developing (using a symbolic manipulation language), for the analytic computation of renormalization functions on the lattice. 
B. Alles, M. Campostrini, A. Feo and H. Panagopoulos