Atmospheric velocity fields in tepid main sequence stars J. D. Landstreet, F. Kupka, H. A. Ford, T. Officer, T. A. A. Sigut, J. Silaj, S. Strasser and A. Townshend A&A, 503 3 (2009) 973-984 Published online: 22 June 2009 DOI: 10.1051/0004-6361/200912083