Hänsch, T. W. Laser Spectroscopy, Max Planck Institute of Quantum Optics, Max Planck Society;
Scheid, M., Kolbe, D., Markert, F., Hänsch, T. W., & Walz, J. (2009). Continuous-wave Lyman-alpha generation with solid-state lasers. Optics Express, 17(14), 11274-11280. doi:10.1364/OE.17.011274.