C. T. Rettner, E. E. Marinero, R. N. Zare,and A.H. Kung, “Generation of Coherent Extreme Ultraviolet and Vacuum Ultraviolet Radiation Using Pulsed Nozzles,” in Proceedings of S.P.I.E., Los Angeles Technical Symposium in New Lasers for Analytical and Industrial Chemistry, edited by A. Bernhardt, 461, 45-52 (1984).