TY - JOUR AU - B. Marinkovic AU - Ping Wang AU - Alan Gallagher BT - Physical Review A DA - Jan-09-1992 DO - 10.1103/PhysRevA.46.2553 PY - 1992 SP - 2553 EP - 2557 T2 - Physical Review A TI - Threshold electron excitation of Na VL - 46 SN - 1050-2947 ER -