Neutrino masses in SU(5)×U(1) F with adjoint flavons Enrico Nardi, Diego Restrepo and Mauricio Velasquez Eur. Phys. J. C, 72 3 (2012) 1941 Published online: 28 March 2012 DOI: 10.1140/epjc/s10052-012-1941-1