Direct determination of long-range dipolar interactions in by neutron diffractionE. Guarini, G. Casanova, U. Bafile, F. Formisano, R. Magli and F. BarocchiEurophys. Lett., 49 1 (2000) 62-67DOI: https://doi.org/10.1209/epl/i2000-00120-y