Flavored axion in the UV-complete Froggatt–Nielsen models Leon M. G. de la Vega, Newton Nath, Stefan Nellen and Eduardo Peinado Eur. Phys. J. C, 81 7 (2021) 608 Published online: 13 July 2021 DOI: 10.1140/epjc/s10052-021-09410-3