1 R.M. Williams, J.. Kelly, J.S. Hartman, S.W. Sharpe, M.S. Taubman, J.L. Hall, F.. Capasso, C.. Gmachl, D.L. Sivco, J.N. Baillargeon, and A.Y. Cho, Optics Letters 24, (1999).
1 F.-L.. Hong, J.. Ishikawa, J.. Yoda, J.. Ye, L.-S.. Ma, and J.L. Hall, IEEE Transactions on Instrumentation and Measurement 48, (1999).
1 J.. Ye, L.. Robertsson, S.. Picard, L.-S.. Ma, and J.L. Hall, IEEE Transactions on Instrumentation and Measurement 48, (1999).
1 S.A. Diddams, L.-S.. Ma, J.. Ye, and J.L. Hall, in Unknown (World Scientific, Singapore, Innsbruck, 1999).
1 T.P. Dinneen, K.R. Vogel, E.. Arimondo, J.L. Hall, and A.C. Gallagher, Physical Review A 59, (1999).