2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/105850The 4-quark interpretation of the recently discovered X(3872) and Y(4260) resonances is briefly discussed.Presented at the XI International Conference on Hadron Spectroscopy - Hadron 05, 21-26 August 2005, Rio de Janeiro, BrazilHigh Energy Physics - Phenomenologytext