TY - JOUR AU - S. Chen AU - Alan Gallagher BT - Physical Review A DA - Jan-03-1977 DO - 10.1103/PhysRevA.15.888 PY - 1977 SP - 888 EP - 895 T2 - Physical Review A TI - Electron excitation of thallium 72S1/2 and 62D3/2,5/2 levels VL - 15 SN - 0556-2791 ER -