Charlton, M., Keating, C. M., Charlton, M., & Straton, J. C. (2014). On the production of the positive antihydrogen ion ${{{\rm \bar{H}}}^{+}}$ via radiative attachment. Journal of Physics B: Atomic, Molecular and Optical Physics, 47(22), p. 225202. doi:10.1088/0953-4075/47/22/225202

Charlton, Michael, C M. Keating, M. Charlton, and Jack C. Straton. "On the Production of the Positive Antihydrogen Ion ${{{\rm \bar{H}}}^{+}}$ Via Radiative Attachment." Journal of Physics B: Atomic, Molecular and Optical Physics 47, no. 22 (2014): 225202.

Charlton, Michael, C M. Keating, M. Charlton, and Jack C. Straton. "On the Production of the Positive Antihydrogen Ion ${{{\rm \bar{H}}}^{+}}$ Via Radiative Attachment." Journal of Physics B: Atomic, Molecular and Optical Physics 47.22 (2014): 225202.