2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/143891This talk is based on results obtained for masses and wave functions of heavy quarkonia in a light-front Hamiltonian formulation of QCD with just one flavor of quarks using an ansatz for the mass-gap for gluons. Since the calculated spectra compare reasonably well with data, some further steps one can make are discussed.9 pages, latex, uses frascatiphys.sty, talk at HADRON07: XII Int. Conf. on Hadron Spectroscopy, Frascati, October 8-13, 2007High Energy Physics - Phenomenologytext