2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/40633I briefly review the progress in perturbative QCD calculations in LEP era and discuss the prospects for the extension of their accuracy to higher orders.Latex, 5 pages. Invited talk given at the XIII italian meeting on high energy physics ``LEPTRE'', Rome April 18-20 2001, to appear in the proceedingsHigh Energy Physics - Phenomenologytext