TY - JOUR AU - T. Burnett AU - S. Rountree AU - Gary Doolen AU - W. Robb BT - Physical Review A DA - Jan-02-1976 DO - 10.1103/PhysRevA.13.626 PY - 1976 SP - 626 EP - 631 T2 - Physical Review A TI - Differential cross sections for electron-impact ionization of helium UR - http://link.aps.org/doi/10.1103/PhysRevA.13.626 VL - 13 SN - 0556-2791 ER -