3D MHD simulations of magnetic field evolution and radio polarization of barred galaxies B. Kulesza-Żydzik, K. Kulpa-Dybeł, K. Otmianowska-Mazur, M. Soida and M. Urbanik A&A, 522 (2010) A61 Published online: 03 November 2010 DOI: 10.1051/0004-6361/201015036