2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/104003For readers interested in the history of chiral symmetry we present the translation of two papaers from 1955 and 1959 from German to English, in which chiral symmetry properties for weak and strong interactions have been postulated and discussed.16 pagesHistory and Philosophy of PhysicsHigh Energy Physics - Phenomenologytext