Multi-photon signatures at the Fermilab Tevatron A.G. Akeroyd, A. Alves, M.A. Díaz and O. Éboli Eur. Phys. J. C, 48 1 (2006) 147-157 Published online: 28 September 2006 DOI: 10.1140/epjc/s10052-006-0014-8