A. Stolow, J. P. Shaffer, T. Schultz, J. G. Underwood, and C. C. Hayden, "Time-Resolved Photoelectron Spectroscopy: Charge & Energy Flow in Molecules," in The Thirteenth International Conference on Ultrafast Phenomena, 2002 OSA Technical Digest Series (Optical Society of America, 2002), paper FB1.