1. Streater, R.F., Wightman, A.S.: PCT, Spin, Statistics and All That. Benjamin, New York (1964)
2. Kostelecký, V.A. (ed.): CPT and Lorentz Symmetry, Vols. I, II. World Scientific, Singapore (1999), and references therein
3. Coleman, S., Glashow, S.: Phys. Rev. D 59, 116008 (1999)
4. Jackiw, R., Kostelecký, V.A.: Phys. Rev. Lett. 82, 3572 (1999)
5. Andrianov, A., Giacconi, P., Soldati, R.: J. High Energy Phys. 0202, 030 (2002)