2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/212802The Annals of Applied Probability 16 (2006) 984--1033 [URL: http://projecteuclid.org/euclid.aoap/1151592257]Published in at http://dx.doi.org/10.1214/07-AAP479 the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org)Probability91B28 (Primary) 60F15, 91A05 (Secondary)text