Pad\'e-Z$_2$ stochastic estimator of determinants applied to quark loop   expansion of lattice QCD
  We use the Pad\'e-Z$_2$ stochastic estimator for calculating Tr log M to compute quark loop corrections to quenched QCD. We examine the main source of error in this technique and look at a way of controlling it. 
J. F. Markham (University of Melbourne), T. D. Kieu (CSIRO MST)