1 P.. Dubé, L.-S.. Ma, J.. Ye, P.A. Jungner, and J.L. Hall, Journal of the Optical Society of America B 13, (1996).
1 J.L. Hall, J.. Ye, L.-S.. Ma, S.D. Swartz, P.A. Jungner, and S.B. Waltman, in (World Scientific, Woods Hole, MA, 1996).