Probing confinement by direct photons and dileptons V. V. Goloviznin, A. V. Nikolskii, A. M. Snigirev and G. M. Zinovjev Eur. Phys. J. A, 55 8 (2019) 142 Published online: 30 August 2019 DOI: 10.1140/epja/i2019-12836-9