Stationary solutions for the parity-even sector of the CPT-even and Lorentz-covariance-violating term of the standard model extensionRodolfo Casana, Manoel M. Ferreira, A. R. Gomes and Paulo R. D. PinheiroEur. Phys. J. C, 62 3 (2009) 573-578DOI: https://doi.org/10.1140/epjc/s10052-009-1047-6