TY - JOUR AU - Marinkovic, B AU - Wang, P AU - Gallagher, A C2 - Physical Review A (Atomic, Molecular and Optical Physics) DA - 1992-01-01 LA - en M1 - 46 PB - Physical Review A (Atomic, Molecular and Optical Physics) PY - 1992 TI - Threshold electron excitation of Na ER -