2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/48292We report about recent progress in the treatment of bound states in QCD.12 pages, latex, 3 figures. Plenary talk given at the XI International Conference 'Problems of Quantum Field Theory' in memory of D. I. Blokhintsev, Dubna, July 13-17, 1998High Energy Physics - Phenomenologytext