2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/149053We discuss issues that arise in the regularisation of supersymmetric theories. (To appear in the book `Perspectives on Supersymmetry', World Scientific, Editor G. Kane.)19 pages, latex, no figures. Uses sprocl.sty. Discussion of SQCD IR fixed point extended slightlyHigh Energy Physics - Phenomenologytext