Astron. Astrophys. 348, 71-76 (1999)

Acknowledgements

The author would like to acknowledge the kind hospitality of Kapteyn Institute, The Netherlands, where much of this work has been done. It is a pleasure to thank Prof. T. S. van Albada for his encouragement during this research, valuable comments and suggestions. Thanks are also due to Dr. G. T. Petrov, Dr. A. Strigachev and Drs. L. Slavcheva for their support and helpful comments.

© European Southern Observatory (ESO) 1999

Online publication: July 16, 1999
helpdesk.link@springer.de