Towards a determination of Csw using Numerical Stochastic Perturbation   Theory (NSPT)
  We outline a strategy to compute the second-loop contribution to the Csw coefficient of the Sheikoleslami-Wohlert-Wilson fermion action by means of NSPT. We also present preliminary results for higher-order integrators for the Langevin evolution within NSPT. At fixed numerical accuracy, these integrators considerably reduce the required computer-time. 
C. Torrero, G.S. Bali