2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/89386In the comment(quant-ph/0103003) Eggeling,Vollbrecht and Wolf suspect our method in quant-ph/0102133 is not practical. Here we explain our result and method and show that our example can tell one how to judge a separable state, and so our method is practical, at least for many mixed states.RevTeX, 1 pagesQuantum Physicstext