Surface imaging of stellar non-radial pulsations - II. The β Cephei star ω1 Sco S. V. Berdyugina, J. H. Telting, H. Korhonen and C. Schrijvers A&A, 406 1 (2003) 281-285 Published online: 17 November 2003 DOI: 10.1051/0004-6361:20030747