2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/42741Recent progress in the calculation of radiative corrections and in Monte Carlo event generation, relevant for a future e+e- linear collider, is reviewed.15 pages, latex, 4 postscript files, to appear in the proceedings of "The 4th ECFA/DESY Workshop on Physics and Detectors for a 90-800 GeV Linear e+e- Collider", NIKHEF, Amsterdam, the Netherlands, April 2003, references and acknowledgment updatedHigh Energy Physics - Phenomenologytext