TY - JOUR AU - D. Heddle AU - J. Gallagher BT - Reviews of Modern Physics DA - Jan-04-1989 DO - 10.1103/RevModPhys.61.221 PY - 1989 SP - 221 EP - 278 T2 - Reviews of Modern Physics TI - Measurements of electron impact optical excitation functions UR - http://link.aps.org/doi/10.1103/RevModPhys.61.221 VL - 61 SN - 0034-6861 ER -