2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/43812Recent progress is reviewed regarding the application of the non-Abelian symmetries S_3, D_4, and A_4 to the understanding of family structure in leptons and quarks.16 pages, no figure, talk at SI2004, Fuji-Yoshida, JapanHigh Energy Physics - Phenomenologytext