Wu, S., Sansonetti, C. J., Simien, C. E., Gillaspy, J. D., Tan, J. N., Brewer, S. M., . . . Porto, J. V. (2011). Absolute Transition Frequencies and Quantum Interference in a Frequency Comb Based Measurement of the ^{6,7}Li D Lines. Physical Review Letters, 107(2), p. 023001. doi:10.1103/PhysRevLett.107.023001

Wu, Saijun, Craig J. Sansonetti, C. E. Simien, J. D. Gillaspy, Joseph N. Tan, Samuel M. Brewer, Roger C. Brown, Wu Saijun, and J. V. Porto. "Absolute Transition Frequencies and Quantum Interference in a Frequency Comb Based Measurement of the ^{6,7}Li D Lines." Physical Review Letters 107, no. 2 (2011): 023001.

Wu, Saijun, et al. "Absolute Transition Frequencies and Quantum Interference in a Frequency Comb Based Measurement of the ^{6,7}Li D Lines." Physical Review Letters 107.2 (2011): 023001.