1. Optical atomic clocks
2. Systematic evaluation of an atomic clock at 2 × 10−18 total uncertainty
3. S. Schiller, A. Görlitz, A. Nevsky, S. Alighanbari, S. Vasilyev, C. Abou-Jaoudeh, G. Mura, T. Franzen, U. Sterr, S. Falke et al., in European Frequency and Time Forum (EFTF), 2012 (IEEE, 2012), pp. 412–418.
4. Development of a strontium optical lattice clock for the SOC mission on the ISS