The NLO jet vertex for Mueller-Navelet and forward jets: the gluon part J. Bartels, D. Colferai and G.P. Vacca Eur. Phys. J. C, 29 2 (2003) 235-249 Published online: 02 June 2003 DOI: 10.1140/epjc/s2003-01169-5