Astron. Astrophys. 364, 901-910 (2000)

Acknowledgements

I.A.K and N.V.P. are grateful to Max-Plank-Institut für Astrophysik in Garching bei München for hospitality. Performing this work, G.S.B.-K., A.I.K., and N.V.P. were partially supported by the Russian Foundation of Basic Research under Grant No. 98-01-00352.

© European Southern Observatory (ESO) 2000

Online publication: January 29, 2001
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