Andriamonje S, Chevallier M, Cohen C, et al. Observation of radiative electron capture into K,L,M shells of 25-MeV/u Xe53+ ions channeled in silicon. Phys Rev Lett. 1987;59(20):2271-2274doi: 10.1103/PhysRevLett.59.2271.

Andriamonje, S., Chevallier, M., Cohen, C., Dural, J., Gaillard, M. J., Genre, R., Hage-Ali, M., Kirsch, R., L'Hoir, A., Mazuy, D., Mory, J., Moulin, J., Poizat, J. C., Remillieux, J., Schmaus, D., & Toulemonde, M. (1987). Observation of radiative electron capture into K,L,M shells of 25-MeV/u Xe53+ ions channeled in silicon. Physical review letters, 59(20), 2271-2274. https://doi.org/10.1103/PhysRevLett.59.2271

Andriamonje, et al. "Observation of radiative electron capture into K,L,M shells of 25-MeV/u Xe53+ ions channeled in silicon." Physical review letters vol. 59,20 (1987): 2271-2274. doi: https://doi.org/10.1103/PhysRevLett.59.2271