2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/43063We review critically the main assumptions on which the standard theory of neutrino oscillations is based. We show that all assumptions are realistic, except the so-called "equal momentum assumption", which however is irrelevant. We conclude that the standard expression for the probability of neutrino oscillations is robust.5 pages, talk presented at IFAE 2003, Lecce, 23-26 April 2003High Energy Physics - Phenomenologytext