TY - JOUR AU - S. Chen AU - Alan Gallagher BT - Physical Review A DA - Jan-08-1976 DO - 10.1103/PhysRevA.14.593 PY - 1976 SP - 593 EP - 601 T2 - Physical Review A TI - Excitation of the Ba and Ba+ resonance lines by electron impact on Ba atoms VL - 14 SN - 0556-2791 ER -