2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/197151A unique parameterization of secondary (thermal) dilepton and photon yields in heavy-ion experiments at CERN-SPS is proposed. Adding those thermal yields to background contributions the spectral shapes of the CERES/NA45, NA38, NA50, HELIOS/3 and WA98 data from experiments with lead and sulfur beams can be well described.4 pages, talk at QM2001, Jan. 15 -20, 2001, Stony BrookHigh Energy Physics - Phenomenologytext