1 R.P. Smith, P.A. Roos, J.K. Wahlstrand, J.A. Pipis, M.B. Rivas, and S.T. Cundiff, Journal of Research of the National Institute of Standards and Technology 112, (2007).
1 J.K. Wahlstrand, J.A. Pipis, P.A. Roos, S.T. Cundiff, and R.P. Smith, Applied Physics Letters 89, (2006).
1 P.A. Roos, X.. Li, J.A. Pipis, T.M. Fortier, S.T. Cundiff, R.D.R. Bhat, and J.E. Sipe, Journal of the Optical Society of America B 22, (2005).