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Astron. Astrophys. 336, L9-L12 (1998) AcknowledgementsThe authors wish to thank Rene Laureijs, Carlos Gabriel, Julian Sternberg, and Kazuhiro Shimasaku for their extremely useful discussion. The referee, Michael Rowan-Robinson, made valuable suggestions that substantially improved the presentation of this work. ![]() ![]() ![]() ![]() © European Southern Observatory (ESO) 1998 Online publication: July 7, 1998 ![]() |