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Astron. Astrophys. 340, 335-342 (1998) AcknowledgementsBoth authors wish to acknowledge the debt owed to the late Professor P. Carruthers who initiated the DWT study in our group. He will be sorely missed by us both. We also thank to Drs. H.G. Bi and P.Lipa for insightful conversations. ![]() ![]() ![]() ![]() © European Southern Observatory (ESO) 1998 Online publication: November 9, 1998 ![]() |