TY - JOUR AU - Herbst, J AU - Watson, R AU - Wilkins, J C2 - Physical Review B (Condensed Matter and Materials Physics) DA - 1976-02-15 00:02:00 LA - en M1 - 13 PB - Physical Review B (Condensed Matter and Materials Physics) PY - 1976 TI - 4f Excitation Energies in Rare-Earth Metals: Relativistic Calculations ER -