Hipparcos : scientific aspects of the input catalogue preparation : proceedings of a colloquium held at Aussois, Savoie (FRance) from 3 to 7 June 1985, cosponsored by: CNES, CNRS, ESA, INAG, Observatoire de Paris, Matra-Espace / [ comp. by: T.D. Guyenne & J. Hunt]
Hipparcos : scientific aspects of the input catalogue preparation : proceedings of a colloquium held at Aussois, Savoie (FRance) from 3 to 7 June 1985, cosponsored by: CNES, CNRS, ESA, INAG, Observatoire de Paris, Matra-Espace