TY - JOUR AU - D. Armstrong AU - John Cooper BT - Physical Review A DA - Jan-04-1993 DO - 10.1103/PhysRevA.47.R2446 PY - 1993 SP - R2446 EP - R2449 T2 - Physical Review A TI - Isotope-selective photoionization spectroscopy of barium VL - 47 SN - 1050-2947 ER -