Optical evidence of energy level crossing and anticrossing for U4+ diluted in the incommensurate structure of β-ThCl4 Anita Milicic-Tang, Pierre Delamoye et Jean-Claude KrupaJ. Phys. I France, 1 6 (1991) 917-930DOI: https://doi.org/10.1051/jp1:1991177
