TY - JOUR AU - H. van der Hart AU - Chris Greene BT - Physical Review A DA - Jan-08-2002 DO - 10.1103/PhysRevA.66.022710 PY - 2002 T2 - Physical Review A TI - Regularities and irregularities in partial photoionization cross sections of He VL - 66 SN - 1050-2947 ER -