N.
Ohmae
Nakajima, T. ., Okada, K. ., Wada, M. ., Dzuba, V. A., Safronova, M. S., Safronova, U. I., … Nakamura, N. . (2017). Visible spectra of highly charged holmium ions observed with a compact electron beam ion trap. Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions With Materials and Atoms, 408, 118–121. http://doi.org/10.1016/j.nimb.2017.03.135