Seismology and activity of the F type star HD 49933B. Mosser, F. Bouchy, C. Catala, E. Michel, R. Samadi, F. Thévenin, P. Eggenberger, D. Sosnowska, C. Moutou and A. BaglinA&A, 431 2 (2005) L13-L16DOI: https://doi.org/10.1051/0004-6361:200500003