Schneider, G., Mooser, A., Bohman, M., Schön, N., Harrington, J., Higuchi, T., Nagahama, H., Sellner, S., Smorra, C., Blaum,
K., Matsuda, Y., Quint, W., Walz, J., & Ulmer, S. (2017). Double-trap measurement
of the proton magnetic moment at 0.3 parts per billion precision. Science, 358(6366),
1081-1084. doi:10.1126/science.aan0207.