2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/125904We have investigated two flavor neutrino oscillations in medium with periodic step electron number density profile. An approximate analytical solution have been found when the length of the density fluctuation is smaller then the neutrino oscillation length.LaTeX, 6 pages with 1 figureHigh Energy Physics - Phenomenologytext