Epp, S. W. Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society; Max Planck Advanced Study Group, Center for Free-Electron Laser Science, 22607 Hamburg, Germany;
Epp, S. W. (2013). Comment on "Testing Three-Body Quantum Electrodynamics with Trapped Ti20+ Ions: Evidence for a Z-Dependent Divergence Between Experiment and Calculation". Physical Review Letters, 110(15): 159301, pp. 1-2. doi:10.1103/PhysRevLett.110.159301.