Effelsberg 100-m polarimetric observations of a sample of compact steep-spectrum sources F. Mantovani, K.-H. Mack, F. M. Montenegro-Montes, A. Rossetti and A. Kraus A&A, 502 1 (2009) 61-65 Published online: 15 June 2009 DOI: 10.1051/0004-6361/200911815