Gluon production in the Lipatov effective action formalism M. A. Braun, S. S. Pozdnyakov, M. Yu. Salykin and M. I. Vyazovsky Eur. Phys. J. C, 73 9 (2013) 2572 Published online: 14 September 2013 DOI: 10.1140/epjc/s10052-013-2572-x