TY  - BOOK
AU  - Walter, Hans G
AU  - Sovers, Ojars J
TI  - Astrometry of fundamental catalogues: the evolution from optical to radio reference frames
T2  - Astronomy and astrophysics library
SN  - 3-540-67436-5
PY  - 2000///
CY  - Berlin
PB  - Springer-Verlag
KW  - Astrometry
ER  -