1/N expansion for Horava–Lifshitz like four-fermion models M. Gomes, T. Mariz, J. R. Nascimento, A. Yu. Petrov and A. J. da Silva Eur. Phys. J. C, 80 6 (2020) 518 Published online: 10 June 2020 DOI: 10.1140/epjc/s10052-020-8100-x