1978 · 527 citations · 0 references
Natural SciencesChemistryPhysicsAtomic PhysicsInorganic ChemistryNuclear PhysicsAtomic Energy LevelsAtomic SpectraElectronic Band StructureMolecular Energy LevelsNuclear DecayElectronic Energy LevelsEmission Spectra Of Rare Earth ElementsHyperfine Structure Of Rare-earth AtomsRare Earth Element ChemistryRare-earth Compounds