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Astron. Astrophys. 360, 391-398 (2000) AcknowledgementsWe thank Erik Hog and Sean Urban for reading the draft version of this paper and their comments and suggestions. We also thank the referee, Dr. T. Corbin, for his careful reading detailed comments. This research is supported by the Netherlands Foundation for Research in Astronomy (NFRA) with financial aid from the Netherlands Organization for Scientific Research (NWO).
© European Southern Observatory (ESO) 2000 Online publication: July 27, 2000 ![]() |