2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/49116The most important advances achieved recently on the double heavy flavored mesons are reviewed. Some problems and outlooks on them are also outlined.11 pages, A talk presented in the OCPA Conference ``Recent Advances and Cross-Century Outlooks in Physics'', March 18-20, 1999, at Atlanta Comments (for replacement): Improvement in EnglishHigh Energy Physics - Phenomenologytext