2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/148031Theoretical uncertainties affecting electroweak observables are reviewed and the relevance of two-loop electroweak radiative corrections for the precision tests of the Standard Model is discussed.presented at the XXX^th Rencontres de Moriond, "Electroweak Interactions and Unified Theories, March 11-18, 1995, Les Arcs, Savoie, France; 8 pages, LaTeX, 1 uuencoded postscript figure in additional fileHigh Energy Physics - Phenomenologytext