Free Access
Issue
Astron. Astrophys. Suppl. Ser.
Volume 135, Number 1, February II 1999
Page(s) 57 - 63
DOI https://doi.org/10.1051/aas:1999159
Published online 15 February 1999

© European Southern Observatory (ESO), 1999

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