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Astron. Astrophys. 332, 1099-1122 (1998) AcknowledgementsThis work has been supported by the Deutsche Forschungsgemeinschaft (DFG), Sonderforschungsbereich 359 "Reaktive Strömungen, Diffusion und Transport". ![]() ![]() ![]() ![]() © European Southern Observatory (ESO) 1998 Online publication: March 30, 1998 ![]() |