2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/54348Lectures given by C.G. in the Advanced School on Effective Theories (Almuñecar, Granada, 1995) on duality in N=2 supersymmetric Yang-Mills, and the coupling to gravity.45 pages. LaTex fileHigh Energy Physics - Theorytext