TY  - BOOK
ED  - European Space Agency
TI  - Hipparcos and Tycho Catalogues: vol. 4, construction of the Tycho catalogue
T2  - ESA SP-1200
SN  - 92-9092-399-7
PY  - 1997///
CY  - Netherlands
PB  - European Space Agency
KW  - Hipparcos and Tycho catalogues, Catalog-Hipparcos and Tycho, Star catalog
ER  -