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Astron. Astrophys. 342, 563-574 (1999) AcknowledgementsVDM, FR and GP acknowledge partial support from Ministero dell'Università e della Ricerca Scientifica e Tecnologica, Agenzia Spaziale Italiana. LG acknowledges support from NASA grant NAGW-4081. ![]() ![]() ![]() ![]() © European Southern Observatory (ESO) 1999 Online publication: February 22, 1999 ![]() |