Testing general relativity by micro-arcsecond global astrometry A. Vecchiato, M. G. Lattanzi, B. Bucciarelli, M. Crosta, F. de Felice and M. Gai A&A, 399 1 (2003) 337-342 Published online: 05 February 2003 DOI: 10.1051/0004-6361:20021785