2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/12465A brief overview of non-standard big bang nucleosynthesis (BBN) scenarios is presented. Trends and results of the light-element nucleosynthesis in BBN scenarios with small-scale or large-scale inhomogeneity, the presence of antimatter domains, stable or unstable massive neutrinos, neutrino oscillations, neutrino degeneracy, or massive decaying particles are summarized.7 pages, Proceedings "Neutrino Astrophysik", Ringberg 1997AstrophysicsHigh Energy Physics - Phenomenologytext