Comment on "Positron and positronium chemistry by quantum Monte Carlo. IV.Can this method accurately compute observables beyond energy" [J. Chem. Phys. 111, 108 (1999)]
J. Mitroy et Gg. Ryzhikh, Comment on "Positron and positronium chemistry by quantum Monte Carlo. IV.Can this method accurately compute observables beyond energy" [J. Chem. Phys. 111, 108 (1999)], J CHEM PHYS, 112(10), 2000, pp. 4893-4894