Phase transitions driven by competing interactions in low-dimensional systems M. Cordin, B. A. J. Lechner, P. Amann, A. Menzel, E. Bertel, C. Franchini, R. Zucca, J. Redinger, M. Baranov and S. Diehl EPL, 92 2 (2010) 26004 Published online: 16 November 2010 DOI: 10.1209/0295-5075/92/26004