Z ′ boson signal at Fermilab-Tevatron and CERN-LHC in a 331 model J. G. Dueñas, N. Gutierrez, R. Martínez and F. Ochoa Eur. Phys. J. C, 60 4 (2009) 653-659 Published online: 19 March 2009 DOI: 10.1140/epjc/s10052-009-0969-3