A system with a complex phase transition: Indium chains on Si(111) O. Gallus, Th. Pillo, M. Hengsberger, P. Segovia and Y. Baer Eur. Phys. J. B, 20 3 (2001) 313-319 Published online: 15 April 2001 DOI: 10.1007/BF01352592