Nofal, M., Hagmann, S., Stöhlker, T., Jakubassa-Amundsen, D. H., Kozhuharov, C., Wang, X., et al. (2007). Radiative electron capture to the continuum and the short-wavelength limit of electron-nucleus Bremsstrahlung in 90A MeV U88+(1s(2)2s(2))+N-2 collisions. Physical Review Letters, 99(16): 163201.