The quartet ground state in CeB6: An inelastic x-ray scattering study M. Sundermann, K. Chen, H. Yavaş, Hanoh Lee, Z. Fisk, M. W. Haverkort, L. H. Tjeng and A. Severing EPL, 117 1 (2017) 17003 Published online: 22 February 2017 DOI: 10.1209/0295-5075/117/17003