Determination of exchange and crystal field effects in Sm alloys by polarized neutron diffraction J.X. Boucherle, D. Givord, J. Laforest, J. Schweizer and F. Tasset J. Phys. Colloques, 40 C5 (1979) C5-180-C5-182 DOI: 10.1051/jphyscol:1979565