On the Regularisation in J-matrix Methods
  We investigate the effects of the regularization procedure used in the J-Matrix method. We show that it influences the convergence, and propose an alternative regularization approach. We explicitly perform some model calculations to demonstrate the improvement. 
J. Broeckhove (1), V. Vasilevsky (2), F. Arickx (1), and A. Sytcheva   (1) ((1) Group Computational Modeling and Programming...