VLBA polarimetric observations of the CSS quasar 3C 147 A. Rossetti, F. Mantovani, D. Dallacasa, W. Junor, C. J. Salter and D. J. Saikia A&A, 504 3 (2009) 741-749 Published online: 09 July 2009 DOI: 10.1051/0004-6361/200811190