Automated one-loop calculations with GoSam Gavin Cullen, Nicolas Greiner, Gudrun Heinrich, Gionata Luisoni, Pierpaolo Mastrolia, Giovanni Ossola, Thomas Reiter and Francesco Tramontano Eur. Phys. J. C, 72 3 (2012) 1889 Published online: 27 March 2012 DOI: 10.1140/epjc/s10052-012-1889-1