« Enhanced » magnetism and nuclear ordering of 169Tm spins in TmPO 4 C. Fermon, J.F. Gregg, J.-F. Jacquinot, Y. Roinel, V. Bouffard, G. Fournier et A. Abragam J. Phys. France, 47 6 (1986) 1053-1075 DOI: 10.1051/jphys:019860047060105300