On the Definition of Gauge Field Operators in Lattice Gauge-Fixed   Theories
  We address the problem of defining the gluon field on the lattice in terms of the natural link variables. Different regularized definitions are shown, through non perturbative numerical computation, to converge towards the same continuum renormalized limit. 
L. Giusti, M. L. Paciello, S. Petrarca, B. Taglienti, M. Testa