Field sources in a Lorentz-symmetry breaking scenario with a single background vector L. H. C. Borges, F. A. Barone and J. A. Helayël-Neto Eur. Phys. J. C, 74 6 (2014) 2937 Published online: 25 June 2014 DOI: 10.1140/epjc/s10052-014-2937-9