More on the renormalization of the horizon function of the Gribov–Zwanziger action and the Kugo–Ojima Green function(s)D. Dudal, S. P. Sorella and N. VandersickelEur. Phys. J. C, 68 1-2 (2010) 283-298DOI: https://doi.org/10.1140/epjc/s10052-010-1304-8