Calculations were made of the electronic energy band structures of LaB6 and LaAl2 with the APW method and the local-spin-density approximation. Narrow 4f bands lay a few eV above the Fermi level. Calculated results for the Fermi surface accounted reasonably well for recent de Haas-van Alphen experiments.

Electronic structures of LaB6 and LaAl2. Hasegawa, A., Yanase, A.: Journal of Magnetism and Magnetic Materials, 1980, 15-18[2], 887-8