The Quenched Continuum Limit
  We show that all current formalisms for quarks in lattice QCD are consistent in the quenched continuum limit, as they should be. We improve on previous extrapolations to this limit, and the understanding of lattice systematic errors there, by using a constrained fit including both leading and sub-leading dependence on a. 
C. T. H. Davies, G. P. Lepage, F. Niedermayer, D. Toussaint