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Astron. Astrophys. 335, 281-286 (1998) AcknowledgementsThis work has been supported by CNRS. We would like to thank Dr. Laurent Nottale for helpful discussions. We would also like to thank Dr. Calvin Hamilton for allowing us the use of his data. ![]() ![]() ![]() ![]() © European Southern Observatory (ESO) 1998 Online publication: June 12, 1998 ![]() |