Karshenboim, Savely G. Laser Spectroscopy, Max Planck Institute of Quantum Optics, Max Planck Society;
Newell, D. B., Cabiati, F., Fischer, J., Fujii, K., Karshenboim, S. G., Margolis, H. S., et al. (2018). The CODATA 2017 values of h, e, k, and NA for the revision of the SI. Metrologia, 55, L13-L16. doi:10.1088/1681-7575/aa950a.