2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/41092Lectures deliverd at the NATO Advanced Study Institute on QCD Perspectives on Hot and Dense Matter, Cargese, Aug. 6 - 18, 2001. Dedicated to the memory of Dominique Vautherin.12 pagesHigh Energy Physics - Phenomenologytext