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Astron. Astrophys. 363, L33-L36 (2000) AcknowledgementsWe thank Dr. Dan Kiselman for valuable discussions on boron-line formation and NLTE effects and also the referee Dr. Werner W. Weiss for valuable comments to the manuscript. Professor Bengt Gustafsson is thanked for helpful and enlightening discussions. The authors are supported by the Swedish Natural Sciences Research Council and the Swedish National Space Board.
© European Southern Observatory (ESO) 2000 Online publication: December 5, 2000 ![]() |