García, E., Hernández-Galeana, A., Jaramillo, D., Ponce, W., & Zepeda, A. (2002). Hierarchical radiative quark mass matrices with an $\pmb{{\rm U}(1)_{\rm X}^{}}$ horizontal symmetry model. Revista Mexicana De Física, 48(1), 32–0. Retrieved from https://rmf.smf.mx/ojs/index.php/rmf/article/view/3029