Electron resonance in the insulating spin glass Eu0.4Sr0.6 S A. Deville, C. Arzoumanian, B. Gaillard, C. Blanchard, J.P. Jamet et H. Maletta J. Phys. France, 42 12 (1981) 1641-1646 DOI: 10.1051/jphys:0198100420120164100