2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/196966The determination of CKM matrix elements in the b-sector is discussed, emphasizing the new measurements of Vub and Vcb by the CLEO collaboration.4 pages, Latex, to be published in proceedings of Hadron 2001 at ProtvinoHigh Energy Physics - Experimenttext