One-loop beta functions for the orientable non-commutative Gross–Neveu model A. Lakhoua, F. Vignes-Tourneret and J.-C. Wallet Eur. Phys. J. C, 52 3 (2007) 735-742 Published online: 02 October 2007 DOI: 10.1140/epjc/s10052-007-0424-2