New measurements of magnetic fields of roAp stars with FORS 1 at the VLT S. Hubrig, T. Szeifert, M. Schöller, G. Mathys and D. W. Kurtz A&A, 415 2 (2004) 685-689 Published online: 11 February 2004 DOI: 10.1051/0004-6361:20031486