1. See for instance, S. Pokorski, Gauge Field Theories, Cambridge Monographs on Mathematical Physics, Cambridge University Press, Second Edition 2000
2. See for instance, S. Weinberg, The Quantum Theory of Fields vols. I–III, Cambridge University Press, Cambridge 1996–2000.
3. See for instance, G.G. Ross, Grand Unified Theories, Addison-Wesley, Redwood City CA, 1985.
4. For a review on quantum corrections to neutrino masses and mixing see P.H. Chankowski and S. Pokorski, Int. J. Mod. Phys.
A17 (2002) 575.
5. For a review of the works on the neutrino mass theory see G. Altarelli and F. Feruglio, Theoretical Models of Neutrino Masses and Mixing, hep-ph/0206077.