VLBA observations of GHz-Peaked-Spectrum radio sources at 15 GHz C. Stanghellini, D. Dallacasa, C. P. O'Dea, S. A. Baum, R. Fanti and C. Fanti A&A, 377 2 (2001) 377-388 Published online: 15 October 2001 DOI: 10.1051/0004-6361:20011101