TY - JOUR AU - Bergeson, S AU - Baldwin, K AU - Lucatorto, Thomas AU - McIlrath, T AU - Cheng, C AU - Eyler, E C2 - Journal of the Optical Society of America B-Optical Physics DA - 2000-09-01 00:09:00 LA - en M1 - 17 PB - Journal of the Optical Society of America B-Optical Physics PY - 2000 TI - Doppler-Free Two-Photon Spectroscopy in the VUV: The Helium 11S - 21S Transition ER -