2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/2635We constrain high-energy neutrino fluxes with the observed cosmic ray and gamma ray fluxes, include flavor oscillations and propagation through Earth, and show that blazars could possibly be detected by cubic-kilometer neutrino telescopes.4 pages, 2 figures, to appear in the Proceedings of the XXIst Moriond Workshop 'Very High Energy Phenomena in the Universe', Les Arcs, France, January 20-27 2001AstrophysicsHigh Energy Physics - Phenomenologytext