Strain-induced surface structures on -covered : Epitaxial films on A. Antons, Y. Cao, B. Voigtländer, K. Schroeder, R. Berger and S. Blügel Europhys. Lett., 62 4 (2003) 547-553 Published online: 01 May 2003 DOI: 10.1209/epl/i2003-00385-6