The influence of weak links on magnetic ordering in layered structures B. Hjörvarsson, Yu. Kudasov, M. Wolff, T. Hase, C. Chacon, M. van Kampen, P. Nordblad, A. Liebig and H. Zabel EPL, 81 1 (2008) 17008 Published online: 06 December 2007 DOI: 10.1209/0295-5075/81/17008