Line profile variations in classical Cepheids - Evidence for non-radial pulsations? V. V. Kovtyukh, S. M. Andrievsky, R. E. Luck and N. I. Gorlova A&A, 401 2 (2003) 661-668 Published online: 21 March 2003 DOI: 10.1051/0004-6361:20030130