Extension of the ICRF for selected areas down to the 16th magnitude – II J. I. B. Camargo, C. Ducourant, R. Teixeira, J.-F. Le Campion, M. Rapaport and P. Benevides-Soares A&A, 409 1 (2003) 361-368 Published online: 17 November 2003 DOI: 10.1051/0004-6361:20031063