The economical 3-3-1 model revisited P. V. Dong, D. Q. Phong, D. V. Soa and N. C. Thao Eur. Phys. J. C, 78 8 (2018) 653 Published online: 17 August 2018 DOI: 10.1140/epjc/s10052-018-6110-8
