Optical configuration for a micro-arcsecond astrometric interferometer in spaceE. Thomas, S. Robbe, T. Viard, D. Segransan, F. Vakili and R. KrawczykAstron. Astrophys. Suppl. Ser., 138 1 (1999) 147-154DOI: https://doi.org/10.1051/aas:1999268