2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/46426The present status of our understanding of onium production is reviewed. Different models are described and comparisons of theoretical predictions with experimental data are given.4 pages, LaTeX, uses procl.sty (included). Talk given at the DIS'96 Workshop, Rome, April 1996High Energy Physics - Phenomenologytext