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Astron. Astrophys. 319, 788-795 (1997) AcknowledgementsThe author wishes to thank the following persons involved in the observations: P. Amram, Y.M. and Y.P. Georgelin, G. Goldes, E. Le Coarer and M. Marcelin.
© European Southern Observatory (ESO) 1997 Online publication: July 3, 1998 ![]() |