Ornstein-Zernike correlations and magnetic ordering in nanostructuresEver Alberto Velásquez, Johan Mazo-Zuluaga, Dora Altbir and José Mejía-LópezEur. Phys. J. B, 87 3 (2014) 61DOI: https://doi.org/10.1140/epjb/e2014-40712-6