Effective hyperfine temperature in frustrated Gd2Sn2O7: two level model and 155Gd Mössbauer measurementsE. Bertin, P. Bonville, J.-P. Bouchaud, J. A. Hodges, J. P. Sanchez and P. VullietEur. Phys. J. B, 27 3 (2002) 347-354DOI: https://doi.org/10.1140/epjb/e2002-00165-2